homework_remembering_te_grade_4-1zwawpi

2-3
Name
Date
Add or subtract.
1. 2,728
+ __ 7,245
9,973
2. 83,054
+ __ 1,496
84,550
3. 27,300
-__
9,638
17,662
Use any method to add.
4. 4,335
+ __ 2,694
7,029
5. 3,806
+ __ 8,129
11,935
6. 6,401
+ 7,763
7. 9,826
+ 8,531
__ __
14,164 18,357
Solve each problem.
8. 10 × 6 = 6 tens
9. 10 × 9 =
9 tens, or 90
10.
2 × 10 = 2 tens
11.
5 × 10 = 5 tens
12. 10 × 4 tens =
4 hundreds, or 400
13. 10 × 7 tens, or 70 = 7 hundreds
14. 10 × 8 = 8 tens
3
15. × 10 = 3 tens
16. Stretch Your Thinking Lucas says that since 40 × 70
and 60 × 50 both have factors with a total of two
zeros, they will both have products with a total of
two zeros. Is he correct? Explain.
No, Lucas is not correct. Since 6 × 5 = 30, which
already has a zero, the total number of zeros in
the product of 60 × 50 is three, not two.
© Houghton Mifflin Harcourt Publishing Company
34 UNIT 2 LESSON 3 Mental Math and Multiplication