Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.
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Transcript of Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.
![Page 1: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/1.jpg)
Math Grade 4Mrs. Ennis
Multiplying 1 Digit by 2 DigitsLesson Eleven
![Page 2: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/2.jpg)
1. 6703 + 2197 + 4506 =
2. 4,607 – J = 1,382
3. 50 x C = 350
4. 13 x 8 =
5. 0 x 6 =
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7. I mile =____feet
8. Put <, >, or = in the box.
400 + 6000 + 70 + 3 300 + 6100 + 50 + 23
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9. On the first bus to the park, 63 people arrived. On the second bus, 54 people arrived. 19 people left before lunch. How many people were still at the park at lunchtime?
10. Jill and Brent made a visit to the coast. They stayed in Wilmington for 23 days and New Bern for 19 days. How many weeks did they spend at the coast?
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![Page 6: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/6.jpg)
Multiplying Two Digit Numbers
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Step 1
• Start by writing down your problem.
• Example: 21 X 4
![Page 8: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/8.jpg)
Step 2
• Multiply the ones place
4x1
21 x 4
4
![Page 9: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/9.jpg)
Step 3
• then multiply the tens place 2x4 which is eight
21 x4 8 4
•
![Page 10: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/10.jpg)
Step 1
• Start by writing down your problem.
32 X 3
![Page 11: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/11.jpg)
Step 2
• Start by multiplying the ones place 3x2
32 x 3 6
![Page 12: Math Grade 4 Mrs. Ennis Multiplying 1 Digit by 2 Digits Lesson Eleven.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e8f5503460f94b93777/html5/thumbnails/12.jpg)
Step 3
• then multiply the tens place 3x3 which is nine
32 x3 9 6
•
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Carrying (Regrouping)
46 x5
5 x 6 = 30
0
35 x 4 = 20
20 + 3 = 23
23
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Carrying
52 x8
8 x 2 = 16
6
18 x 5 = 40
40 + 1 = 41
41
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Carrying
48 x3
3 x 8 = 24
4
23 x 4 = 12
12 + 2 = 14
14
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Carrying
27 x4
4 x 7 = 28
8
24 x 2 = 8
8 + 2 = 10
10
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Practice
45x6
38x8
67x3
29x5
41x9
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Practice
45x6
38x8
67x3
29x5
41x9
270 304 201 145 369
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Online Practice
two digit multiplication (you may want a pencil and paper)
video presentation: two digit multiplication
(watch for review)
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Math Fun
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Answer:
Answer: 497 x 7 = 49 (this year)5 x 10 = 50 (next year)
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Resources:http://mathlearnnc.sharpschool.com/UserFiles/Servers/Server_4507209/File/Instructional%20Resources/G4WW1-4.pdfhttp://www.ixl.com/math/grade-4/multiply-1-digit-numbers-by-larger-numbers
http://www.youtube.com/watch?v=OYYYc7ygd38