homework_remembering_te_grade_4-1zwawpi

2-17
Name
Date
Add or subtract.
1. 82,905
- 81,927
2. 53,742
+ 93,587
3. 400,000
- 162,947
__ __ __
978 147,329 237,053
Solve.
4. Marta bought 18 sheets of stickers for her sticker album.
Each sheet contained 32 stickers. How many stickers did
Marta buy for her sticker album?
576 stickers
Show your work.
Draw a rectangle model. Solve using any method that
relates to the model.
5. 3 ×
8,448
2,816 6. 7 × 1,578
Check students’ methods.
11,046
7. Stretch Your Thinking Zoe rounded 6 × 8,493 to
6 × 8,000. Andrew rounded 6 × 8,493 to 6 × 9,000.
Who will have an estimate closer to the actual product?
How do you know? Explain another way to estimate
6 × 8,493 that would give a better estimate.
Zoe will have a better estimate because 8,493 is closer
to 8,000 than 9,000. A better estimate would be to
round 8,493 to the nearest hundred. Then you could
break apart 8,500 into 8,000 and 500, multiply both
parts by 6, and add the results.
6 × (8,000 + 500) = (6 × 8,000) + (6 × 500)
= 48,000 + 3,000
= 51,000
© Houghton Mifflin Harcourt Publishing Company
62 UNIT 2 LESSON 17 Use the Shortcut Method