Post on 17-Apr-2020
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Grade 2 MathematicsTeacher At-Home Activity Packet
The At-Home Activity Packet includes 22 sets of practice problems that align to important math concepts that have likely been taught this year.
Since pace varies from classroom to classroom, feel free to select the pages that align with the topics your students have covered.
The At-Home Activity Packet includes instructions to the parent and can be printed and sent home.
This At-Home Activity Packet—Teacher Guide includes all the same practice sets as the Student version with the answers provided for your reference
See the Grade 2 Math concepts covered in
this packet!
Teacher Packet
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Teacher Packet
Grade 2 Math concepts covered in this packetConcept Practice Fluency and Skills Practice
Understanding Addition and Subtraction Strategies
1 Adding by Counting On and Making a Ten ............... 3
2 Using Doubles and Doubles Plus 1 .............................. 4
3 Counting On and Making a Ten to Subtract ............. 5
Understanding Addition and Subtraction Word Problems
4 Solving Take-Apart Word Problems ............................. 6
5 Solving Comparison Word Problems .......................... 8
6 Ways to Solve Two-Step Problems ............................... 9
7 Ways to Model Word Problems ..................................... 10
Understanding Addition and Subtraction of Multi-Digit Numbers
8 Different Ways to Show Addition.................................. 11
9 Subtracting by Adding Up .............................................. 12
10 Subtracting by Regrouping ............................................ 14
11 Strategies to Find a Missing Addend ........................... 15
Understanding Place Value Concepts and Regrouping
12 Finding the Value of Three-Digit Numbers ............... 17
13 Writing Three-Digit Numbers......................................... 18
14 Ways to Compare Three-Digit Numbers .................... 20
15 Adding and Regrouping Ones ....................................... 21
16 Adding and Regrouping Tens ........................................ 22
17 Regrouping Tens to Ones ................................................ 23
18 Regrouping Hundreds to Tens ....................................... 24
19 Adding Four Two-Digit Numbers ................................. 25
Understanding Length
20 Measuring in Inches and Centimeters ......................... 26
21 Measuring in Inches and Feet ........................................ 28
22 Measuring in Centimeters and Meters ........................ 30
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Fluency and Skills Practice
1 8 1 2 5
3 6 1 4 5
5 7 1 3 5
7 9 1 1 5
9 5 1 5 5
11 9 1 2 5
13 8 1 4 5
15 6 1 9 5
2 8 1 3 5
4 6 1 8 5
6 7 1 5 5
8 9 1 6 5
10 5 1 8 5
12 2 1 9 5
14 4 1 8 5
16 6 1 7 5
17 Which strategy did you use to solve problem 11? Explain.
Add.
Adding by Counting On and Making a Ten
Answers will vary. Possible answer: I made a 10 with 9 1 1 and then added 1 more to get 11.
10
10
10
10
10
11
12
15
11
14
12
15
13
11
12
13
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Fluency and Skills Practice
1 4 1 4 5
3 6 1 6 5
5 7 1 7 5
7 9 1 9 5
9 5 1 5 5
11 8 1 8 5
2 4 1 5 5
4 5 1 6 5
6 8 1 7 5
8 8 1 9 5
10 6 1 5 5
12 7 1 8 5
13 Which strategy did you use to solve problem 12? Explain why.
Add.
Using Doubles and Doubles Plus 1
Answers will vary. Possible answer: I used the near doubles strategy. I used the double 8 1 8 5 16 and found 1 less to get 7 1 8 5 15.
8 9
12 11
14 15
18 17
10 11
16 15
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Fluency and Skills Practice
1 12 2 3 5
3 1 5 12
3 11 2 3 5
3 1 5 11
5 12 2 5 10
12 2 4 5
7 16 2 5 10
16 2 9 5
2 14 2 5 5
5 1 5 14
4 15 2 7 5
7 1 5 15
6 13 2 5 10
13 2 6 5
8 15 2 5 10
15 2 9 5
9 In problem 6, how did you use your first answer to find your second answer?
Complete each set of equations.
Counting On and Making a Ten to Subtract
Answers will vary. Possible answer: 13 2 3 5 10. So, to find 13 2 6, I needed to subtract 3 more from 10, and 3 less than 10 is 7.
9 9
8
3
5
8
2
6
9 9
8
7
6
8
8
7
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Fluency and Skills Practice
1 Hailey buys 9 potatoes. 4 potatoes are white. The rest are red. How many red potatoes are there? Show your work.
Solution potatoes are red.
2 Levi has 17 pet fish. 7 of the fish are goldfish. The rest are mollies. How many fish are mollies? Show your work.
Solution fish are mollies.
3 Ada wants to read 12 books over the summer. 5 books are stories about cats. The rest are stories about horses. How many books are stories about horses? Show your work.
Solution books are stories about horses.
4 There are 16 chairs at a table. 7 students sit down. The rest of the chairs are empty. How many chairs are empty? Show your work.
Solution chairs are empty.
Solve problems 1–6.
Solving Take-Apart Word Problems
Student work will vary.
Student work will vary.
Student work will vary.
Student work will vary.
5
10
7
9
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Fluency and Skills Practice
Solving Take-Apart Word Problems continued
5 Luis sees 14 dogs at the dog park. 6 of the dogs are small dogs. The rest of the dogs are big dogs. How many dogs are big? Show your work.
Solution dogs are big.
6 Sadie has 20 crayons. She finds 8 crayons in her desk. The rest of the crayons are in her crayon box. How many crayons are in Sadie’s crayon box? Show your work.
Solution crayons are in the crayon box.
7 Which strategy did you use to solve problem 6? Explain why.
Student work will vary.
Answers will vary.
Student work will vary.
12
8
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Fluency and Skills Practice
1 There are 4 fewer cats than dogs. There are 2 cats. How many dogs are there?
dogs
3 Anna has 7 baskets and some flowers. She has 5 fewer baskets than flowers. How many flowers does Anna have?
Anna has flowers.
5 There are 9 apples. There are 6 fewer apples than oranges. How many oranges are there?
oranges
2 Trevor sees 8 red birds. He sees 5 more red birds than blue birds. How many blue birds does Trevor see?
Trevor sees blue birds.
4 There are 14 coats and some hats. There are 6 more coats than hats. How many hats are there?
hats
6 Brynne has 13 books. She has 8 more books than games. How many games does Brynne have?
Brynne has games.
Solve problems 1–6. Show your work.
Solving Comparison Word Problems
6
12
15 5
3
8
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Fluency and Skills Practice
1 Jack has 9 flowers to plant. He plants 2 flowers before lunch. Then he plants 3 more after lunch. How many flowers does Jack have left to plant?
Jack has flowers left to plant.
3 Bella paints 6 pictures on Monday and 8 pictures on Wednesday. Then she paints 3 more pictures on Friday. How many pictures does Bella paint this week?
Bella paints pictures this week.
5 Lucas has 5 crayons. His sister gives him 6 more. Then he gives 4 to a friend. How many crayons does Lucas have now?
Lucas has crayons.
2 There are 8 girls at the park. First, 5 girls go home. Then 6 more girls come to the park. How many girls are at the park now?
There are girls at the park.
4 Ali puts 12 books in a box. She takes 4 books out of the box. Then she puts 6 books in the box. How many books are in the box now?
There are books in the box.
6 Miss Brady puts 15 pencils in her desk. Then she takes out 9 pencils. After school she puts 5 pencils back in her desk. How many pencils are in Miss Brady’s desk now?
There are pencils in the desk.
Solve problems 1–6. Show your work.
Ways to Solve Two-Step Problems
4 9
14
11
17
7
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Fluency and Skills Practice
1 Tony has 37 building blocks. Then he buys more blocks. Now he has 51 blocks. How many blocks does Tony buy?
Tony buys blocks.
3 Jen has some buttons. She gets 23 more buttons from her mom. Now she has 65 buttons. How many buttons did Jen have to begin with?
Jen had buttons to begin with.
5 Ayanna reads 26 pages of her book at school. Later she reads more pages at home. Now she has read 54 pages. How many pages does Ayanna read at home?
Ayanna reads pages at home.
2 There are some chairs in the art room. Mrs. Lopez brings in 16 more chairs. Now there are 42 chairs. How many chairs were in the room at the start?
There were chairs in the room at the start.
4 Colby packs 31 boxes in one day. He packs 12 boxes in the morning and some boxes after lunch. How many boxes does Colby pack after lunch?
Colby packs boxes after lunch.
6 The camp has some tents. Campers set up 42 more tents. Now the camp has 60 tents. How many tents did the camp have to begin with?
The camp had tents to begin with.
Solve problems 1–6. Show your work.
Ways to Model Word Problems
14 26
42 19
28 18
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Fluency and Skills Practice
1 30 1 7 1 50 1 3 5
3 20 1 8 1 40 1 2 5
5 60 1 6 1 10 1 4 5
7 40 1 5 1 40 1 5 5
9 30 1 9 1 20 1 1 5
11 20 1 4 1 60 1 6 5
13 40 1 3 1 30 1 7 5
2 37 1 53 5
4 28 1 42 5
6 66 1 14 5
8 45 1 5 90
10 1 21 5 60
12 24 1 5 90
14 1 37 5 80
15 How does the information in problem 9 help you solve problem 10?
Find the sums and missing addends.
Different Ways to Show Addition
90
Answers may vary. Sample answer: I know the sums of problems 9 and 10 are 60. problem 10 has the addend 21 as does problem 9 (20 1 1), so I know that by adding the first two addends of Problem 9, I will get the missing addend in problem 10.
90
70
80
90
60
90
80
70
80
45
39
66
43
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Fluency and Skills Practice
1 50 2 29 5 ?
5
5
5
50 2 29 5
3 80 2 41 5 ?
1 5
1 5
1 5
80 2 41 5
5 43 2 28 5 ?
1 5
1 5
1 5
1 1 5
43 2 28 5
2 71 2 45 5 ?
1 5
1 5
1 5
1 1 5
71 2 45 5
4 63 2 28 5 ?
1 5
1 5
1 5
1 1 5
63 2 28 5
6 95 2 65 5 ?
1 5
95 2 65 5
Subtract.
Subtracting by Adding Up
49
50
21
21
29 1 20
49 1 1
20 1 1
Possible solutions:
28 30 58
58 2 60
60 3 63
30 2 3 35
35
65 30
30
95
2050
170
205
545 50
70
71
1 26
26
41 30 71
71 9 80
30 9 39
39
28 2 30
30 10 40
40 3 43
2 10 3 15
15
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Fluency and Skills Practice
Subtracting by Adding Up continued
13 How did you decide what to add first? Then how did you get the answer?
7 65 2 39 5 ?
1 5
1 5
1 5
1 1 5
65 2 39 5
9 75 2 28 5 ?
1 5
1 5
1 5
1 1 5
75 2 28 5
8 47 2 15 5 ?
1 5
1 5
1 5
1 1 5
47 2 15 5
10 54 2 12 5 ?
1 5
1 5
1 5
1 1 5
54 2 12 5
Answers will vary. Possible answer: I either added enough to get up to the next tens number or I added a number of tens to the first number. Then I kept adding more until I reached the number I was subtracting from. I combined all the parts I added to get the difference.
39
28 40 68 12 8 20
15 5 2020
59
68 2 70 20 30 50
20 20 401
60
70 5 75 50 4 54
40 7 475
20
40 2 5 30 8 4 42
42
47
47
5 20 7 32
32
1
59
60
65
5 26
26
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Fluency and Skills Practice
1 32 2 16
5 76 2 26
9 42 2 25
13 86 2 19
2 48 2 15
6 82 2 37
10 96 2 40
14 59 2 33
3 57 2 25
7 38 2 28
11 92 2 56
15 77 2 48
4 63 2 39
8 53 2 44
12 65 2 23
16 62 2 27
Circle all the problems where you can regroup a ten to help subtract. Then solve the circled problems.
Subtracting by Regrouping
17 How did you know which problems to circle?
18 Check one of your answers by solving it using a different strategy. Show your work.
16
Answers will vary.Possible answer: I look at the ones place. If the digit in the ones place in the top number is less than the digit in the ones place in the bottom number, I need to regroup a ten.
Answers will vary.
24
9
352967
17
45
36
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Fluency and Skills Practice
1 35 1 5 45
35 1 5 55
35 1 5 60
3 42 1 5 52
42 1 5 82
42 1 5 87
5 26 1 5 36
26 1 5 66
26 1 5 69
7 39 1 5 40
39 1 5 70
39 1 5 75
9 44 1 5 54
44 1 5 64
44 1 5 67
2 24 1 5 34
24 1 5 64
24 1 5 68
4 51 1 5 61
51 1 5 71
51 1 5 76
6 58 1 5 60
58 1 5 70
58 1 5 71
8 27 1 5 30
27 1 5 60
27 1 5 65
10 69 1 5 70
69 1 5 90
69 1 5 93
Solve.
Strategies to Find a Missing Addend
10
20
25
10
1010
210
31
110
40
2040
1240
3331
2120
44
2545
1343
3836
2423
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Fluency and Skills Practice
11 33 1 5 43
33 1 5 73
33 1 5 76
13 26 1 5 70
32 1 5 61
49 1 5 95
15 62 1 5 85
41 1 5 96
53 1 5 77
12 48 1 5 50
48 1 5 80
48 1 5 85
14 57 1 5 83
34 1 5 67
28 1 5 53
16 19 1 5 75
43 1 5 87
68 1 5 99
Strategies to Find a Missing Addend continued
17 Explain how the strategy to solve problem 5 is different from the strategy used to solve problem 6.
18 Explain the strategy you used to solve the first part of problem 14.
Answers may vary. Possible answer: To solve problem 5, I first added tens then added on the ones. To solve problem 6, I first added ones to the nearest ten then added tens.
Answers may vary. Possible answer: First I added 3 to 57 to get to the nearest ten, 60. Then I added 20 to 60 which equals 80. Finally, I added 3 to get to 83. So 3 1 20 1 3 5 26.
210
2644
5623
3240
3329
4455
3743
2546
3124
Teacher Packet
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Fluency and Skills Practice
1 300 1 50 1 1 5
3 400 1 20 1 6 5
5 600 1 40 1 2 5
7 3 hundreds 1 7 tens 1 5 ones 5
9 200 1 8 5
11 600 1 70 1 1 5
13 400 1 70 1 6 5
15 3 hundreds 1 2 tens 1 3 ones 5
2 2 hundreds 1 6 tens 1 7 ones 5
4 400 1 60 1 2 5
6 5 hundreds 1 1 ten 1 3 ones 5
8 500 1 20 1 6 5
10 2 hundreds 1 8 tens 1 0 ones 5
12 6 hundreds 1 0 tens 1 7 ones 5
14 2 hundreds 1 3 tens 1 3 ones 5
16 3 hundreds 1 3 tens 1 2 ones 5
The answers are mixed up at the bottom of the page. Cross out the answers as you complete the problems.
Answers:
233
426
332
607
513
375
476
526
280
323
208
351
267
642
671
462
Finding the Value of Three-Digit Numbers
351267
513
280
607
233
332
462
526
426
642
375
323
208
671
476
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Fluency and Skills Practice
1 one hundred sixty-four
2 six hundred fifty-two
3 three hundred twelve
4 two hundred sixty-one
5 two hundred five
6 five hundred nineteen
Write the number using only digits.
Writing Three-Digit Numbers
Write the number using only digits.
7 100 1 10 1 6
8 500 1 4
9 300 1 40 1 5
10 300 1 50 1 4
11 400 1 60
12 500 1 40
164
116
312
345
652
504
261
354
205
460
519
540
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Fluency and Skills Practice
Writing Three-Digit Numbers continued
Write the number as a sum of hundreds, tens, and ones. Then write the number using words.
13 522 1 1
14 435 1 1
15 218 1 1
16 310 1
17 Explain how problem 8 is the same and different from problem 12. Answers will vary. Possible answer: Both 504 and 540 have 5 hundreds, but 504 has 0 tens and 4 ones and 540 has 4 tens and 0 ones.
500 20
300 10
2
five hundred twenty-two
two hundred eighteen
three hundred ten
four hundred thirty-five
400 30 5
200 10 8
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Fluency and Skills Practice
Compare the numbers in each problem two different ways.
1 Compare 250 and 200.
, and .
3 Compare 346 and 325.
, and .
5 Compare 424 and 453.
, and .
7 Compare 637 and 682.
, and .
9 Compare 531 and 513.
, and .
11 Compare 468 and 486.
, and .
2 Compare 170 and 180.
, and .
4 Compare 235 and 261.
, and .
6 Compare 833 and 824.
, and .
8 Compare 362 and 326.
, and .
10 Compare 714 and 741.
, and .
12 Compare 967 and 959.
, and .
13 What strategies did you use to compare the numbers?
Ways to Compare Three-Digit Numbers
200250 200
250 170180 170
180
325346
346325
235261
261235
424453
453424
824833
833824
637682
682637
326362
362326
513531
531513
714741
741714
468486
486468
959967
967959
Answers will vary.
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Fluency and Skills Practice
1 635 1 321
4 825 1 166
7 772 1 109
10 225 1 224
13 273 1 211
2 439 1 154
5 512 1 336
8 347 1 314
11 548 1 406
14 728 1 253
3 336 1 123
6 246 1 348
9 483 1 208
12 475 1 515
15 627 1 263
The answers are mixed up at the bottom of the page. Cross out the answers as you complete the problems.
Adding and Regrouping Ones
Answers:
449
484
954
594
661
848
881
890
990
956
991
459
691
593
981
956 593 459
991 848 594
881 661 691
449 954 990
484 981 890
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Fluency and Skills Practice
1 435 1 283
4 378 1 343
7 152 1 169
10 481 1 262
13 286 1 644
2 205 1 113
5 186 1 175
8 214 1 225
11 145 1 239
14 267 1 174
3 586 1 130
6 476 1 234
9 362 1 556
12 347 1 133
15 383 1 319
Look at the hundreds digits in each problem. Circle those that will have a sum greater than 500. Then find the exact sums of only the problems you circled.
Adding and Regrouping Tens
16 How do you know that 361 1 283 is greater than 500 without finding the sum?
718 716
721 710
918
743
930 702
Answers will vary. Possible answer: I know the sum will be greater than 500 because I can see that three hundreds plus two hundreds is already five hundreds. The sum of the tens and ones will make the total sum greater than 500.
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Fluency and Skills Practice
1 875 2 646
4 345 2 224
7 953 2 821
10 663 2 425
13 736 2 517
2 478 2 226
5 761 2 338
8 474 2 156
11 619 2 308
14 563 2 249
3 692 2 437
6 514 2 402
9 320 2 210
12 847 2 628
15 375 2 163
Circle all the problems where you must regroup a ten to subtract the ones. Then find the differences of only the problems you circled.
Regrouping Tens to Ones
16 How can you tell by looking at the problem if you need to regroup a ten to subtract the ones?
229 255
318
423
314
238
219
219
Answers will vary. Possible answer: When I look at the ones place, if the ones digit in the top number is less than the ones digit in the bottom number, then I will need to regroup.
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Fluency and Skills Practice
1 816 2 432
4 448 2 160
7 628 2 236
10 347 2 154
13 329 2 170
2 927 2 563
5 743 2 471
8 961 2 470
11 835 2 285
14 465 2 195
3 506 2 315
6 476 2 293
9 527 2 256
12 624 2 382
15 519 2 378
The answers are mixed up at the bottom of the page. Cross out the answers as you complete the problems.
Regrouping Hundreds to Tens
Answers:
193
364
183
242
271
141
191
491
550
384
288
159
272
392
270
384 364 191
288 272 183
392 491 271
193 550 242
159 270 141
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Fluency and Skills Practice
Adding Four Two-Digit Numbers
1 29 1 34 1 21 1 36
50 1 70
3 17 1 36 1 43 1 74
5 32 1 24 1 68 1 46
7 32 1 13 1 29 1 35
9 24 1 12 1 74 1 68
2 45 1 38 1 62 1 15
4 55 1 49 1 71 1 15
6 27 1 19 1 33 1 81
8 53 1 74 1 13 1 44
10 92 1 37 1 71 1 14
11 Explain how you found the answer to problem 8.
Find the sum. Show your work.
160
190
184
160
214
170
109
170
178
120
Answers will vary. Possible answer: I broke each number into tens and ones. Then I added the ones: 3 1 4 1 3 1 4 5 14. Next, I added the tens: 50 1 70 1 10 1 40 5 170. Finally, I added 170 1 14 to get 184.
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Fluency and Skills Practice
1 Use a ruler to measure the length of the piece of tape in inches.
What is the length of the tape? inches
2 Use a ruler to measure the length of the pencil in inches.
What is the length of the pencil? inches
3 Use a ruler to measure the length of the shoe in centimeters.
What is the length of the shoe? centimeters
4 Use a ruler to measure the length of the fish in centimeters.
What is the length of the fish? centimeters
Measuring in Inches and Centimeters
3
5
6
8
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Fluency and Skills Practice
Measuring in Inches and Centimeters continued
5 Use a ruler to measure the length of the string in both inches and centimeters.
What is the length of the string in inches? inches
What is the length of the string in centimeters? centimeters
6 Use a ruler to measure the length of the rectangle in both inches and centimeters.
What is the length of the rectangle in inches? inches
What is the length of the rectangle in centimeters? centimeters
7 For problem 6, did you write different numbers for the length in inches and the length in centimeters? Explain.
2
5
4
10
Yes. Answers will vary. Possible answer: The length of the rectangle is 4 inches and 10 centimeters long. Centimeters are smaller units than inches, so when you measure something in inches and centimeters, there are more centimeters than inches.
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Fluency and Skills Practice
1 Circle the objects that are easier to measure with an inch ruler.
Underline the objects that are easier to measure with a yardstick.
a bike a leaf a table
a book a sticker
2 Circle the objects that are easier to measure with an inch ruler.
Underline the objects that are easier to measure with a yardstick.
a window a cracker a tent
a marker a blanket
3 What is the length of the rectangle to the nearest inch?
inches0 1 2 3 4 5 6
The rectangle is about inches long.
Measuring in Inches and Feet
3
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Fluency and Skills Practice
4 What is the length of the baseball bat to the nearest foot?
1 2 3 4 5 6 7 8 9 10 11 12
1 ft 2 ft 3 ft0 13 14 15
Inches YARDSTICK16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
1 2 3 4 5 6 7 8 9 10 11 120inches
1 2 3 4 5 6 7 8 9 10 11 120inches
1 2 3 4 5 6 7 8 9 10 11 120inches
33 3432
The baseball bat is about feet long.
5 What is the length of the branch to the nearest foot?
1 ft 2 ft
The branch is about foot long.
Measuring in Inches and Feet continued
2
1
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Fluency and Skills Practice
1 Circle the objects that are easier to measure with a centimeter ruler.
Underline the objects that are easier to measure with a meter stick.
a rug a mitten a pool
a bee a shell
2 Circle the objects that are easier to measure with a centimeter ruler.
Underline the objects that are easier to measure with a meter stick.
a porch a spoon
a watch a bus a lunch bag
3 What is the length of the tape to the nearest centimeter?
centimeters
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
The tape is about centimeters long.
Measuring in Centimeters and Meters
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Fluency and Skills Practice
4 What is the length of the bench to the nearest meter?
62 64 66 68 70 72 74 76 78 802 4 6 8 10 12 14 16 18 20 22 240 26 28 30centimeters
32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 63 65 67 69 71 73 75 77 79 82 84 86 88 9081 83 85 87 89 92 94 96 98 10091 93 95 97 993 5 7 9 11 13 15 17 19 21 23 251 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61
97 999896 100
The bench is about meter long.
5 What is the length of the rectangle to the nearest centimeter?
62 64 66 68 70 72 74 76 782 4 6 8 10 12 14 16 18 20 22 240 26 28 30centimeters
32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 63 65 67 69 71 73 75 773 5 7 9 11 13 15 17 19 21 23 251 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61
71 737270 74
The rectangle is about centimeters long.
Measuring in Centimeters and Meters continued
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