Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example...
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Transcript of Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example...
![Page 1: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/1.jpg)
![Page 2: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/2.jpg)
Five-Minute Check (over Lesson 2–1)
Main Idea and Vocabulary
Example 1:Use Rounding with Whole Numbers
Example 2:Use Compatible Numbers
Example 3:Use Rounding with Decimals
![Page 3: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/3.jpg)
• I will estimate sums and differences by rounding and using compatible numbers.
• estimate
• compatible numbers
![Page 4: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/4.jpg)
Use Rounding with Whole Numbers
Estimate 923 – 415 by rounding.
Round each number to the nearest hundred. Then subtract.
– 415923
400900
500–
Answer: So, 923 – 415 is about 500.
923 is closer to 900 than 1,000.415 is closer to 400 than 500.
![Page 5: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/5.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
A. 400
B. 500
C. 550
D. 600
Estimate 812 – 376 by rounding.
![Page 6: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/6.jpg)
Use Compatible Numbers
Gareth’s cat weighs 9.3 pounds. Dieter’s dog weighs 28.9 pounds. Use compatible numbers to estimate the difference.
Find two numbers that you can easily subtract.
– 9.328.9
1030
20–
Answer: So, the difference is about 20 pounds.
28.9 is close to 30.9.3 is close to 10.
![Page 7: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/7.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
A. 90
B. 80
C. 50
D. 40
Use compatible numbers to estimate the difference 89.3 – 52.2.
![Page 8: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/8.jpg)
Use Rounding with Decimals
Karim wants to buy a baseball mitt that costs $13.95 and a baseball that costs $8.47. Estimate the cost of the two items.
One Way
Round to the nearest ten.
$13.958.47$+ +
$20.00
10.00$10.00$
Another Way
Round to the nearest whole number.
$13.958.47$+ +
$22.00
14.00$8.00$
![Page 9: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/9.jpg)
Use Rounding with Decimals
Answer: Depending on how the numbers are rounded, the difference in cost is about $20.00 or $22.00. The actual cost is $22.42. So, rounding to the nearest whole number gave the more accurate estimate.
![Page 10: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/10.jpg)
1. A
2. B
3. C
4. D0% 0%0%0%
A. $2.00
B. $4.00
C. $8.00
D. $20.00
Estimate the difference in the cost of $12.49 and $7.54.
![Page 11: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/11.jpg)
End of the Lesson
![Page 12: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/12.jpg)
Five-Minute Check (over Lesson 2–1)
Image Bank
Math Tool Chest
Add and Subtract Decimals
![Page 13: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/13.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 2–1)
A. 12,340
B. 12,350
C. 12,300
D. 12,400
Round 12,345 to the underlined place.
![Page 14: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/14.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 2–1)
A. 593.19
B. 593.000
C. 593.20
D. 593.198
Round 593.197 to the underlined place.
![Page 15: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/15.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 2–1)
A. 82.1
B. 83.0
C. 82
D. 82.04
Round 82.03 to the underlined place.
![Page 16: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/16.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 2–1)
A. 9.2
B. 10
C. 9.17
D. 9
Round 9.164 to the underlined place.
![Page 17: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/17.jpg)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
(over Lesson 2–1)
A. 816.3
B. 816.31
C. 816.32
D. 816.216
Round 816.295 to the tenths place.
![Page 18: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/18.jpg)
1. A
2. B
3. C
4. D0% 0%0%0%
(over Lesson 2–1)
A. 579.1
B. 580
C. 580.14
D. 580.10
Round 579.139 to the tens place.
![Page 19: Splash Screen. Lesson Menu Five-Minute Check (over Lesson 2–1) Main Idea and Vocabulary Example 1:Use Rounding with Whole Numbers Example 2:Use Compatible.](https://reader036.fdocuments.us/reader036/viewer/2022062301/56649f495503460f94c6abdb/html5/thumbnails/19.jpg)