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3A · Chapter 2 · Practice

Chapter review

Attempt independently, then review the full reasoning in the answer key.

Attempt independently, then review the full reasoning in the answer key. No name, account, or answer is transmitted to any server.

Assessment · 34 questions

Problems

Try the questions first. The complete answer key is provided separately to parents.

Check your work: Finish the problems first, then ask a parent or tutor to review them with the separate answer-key copy.

  1. A1

    Add 689 + 435. Show a place-value breakdown.

  2. A2

    Find 297 + 435 using compensation.

  3. A3

    Calculate 1,765 − 301 by using a nearby hundred.

  4. A4

    Leo collected 146 stamps. Mina collected 109 more than Leo. How many does Mina have?

  5. A5

    Add 815 + 487. Show a place-value breakdown.

  6. A6

    A shop begins with 204 pencils, receives 36, then sells 24. How many pencils remain?

  7. A7

    Find 99 + 509 using compensation.

  8. A8

    Use equal adjustment to find 485 − 198.

  9. A9

    A family has 725 reward points. They spend 198 and earn 76. Find the new balance with an efficient method.

  10. A10

    Two classes have 118 students altogether. One class has 14 more. Find each size.

  11. A11

    Two collections contain 270 items altogether. One has 64 more than the other. How many are in EACH collection?

  12. A12

    Find 1,386 − 561 by breaking apart the amount subtracted.

  13. A13

    A shop begins with 410 pencils, receives 100, then sells 50. How many pencils remain?

  14. A14

    What must be added to 8 to make 100?

  15. A15

    A school library has 200 books. 120 are on the front shelf. How many are elsewhere?

  16. A16

    Calculate 1,639 + 199 by using a nearby hundred.

  17. A17

    A school library has 282 books. 154 are on the front shelf. How many are elsewhere?

  18. A18

    Find 1,280 − 457 by breaking apart the amount subtracted.

  19. A19

    Add 563 + 561. Show a place-value breakdown.

  20. A20

    A child claims 504−197=301. Use compensation to explain and correct.

  21. A21

    Find 1,208 − 509 by breaking apart the amount subtracted.

  22. A22

    A shop begins with 147 pencils, receives 23, then sells 67. How many pencils remain?

  23. A23

    Find 198 + 561 using compensation.

  24. A24

    What must be added to 10 to make 100?

  25. A25

    Two collections contain 230 items altogether. One has 50 more than the other. How many are in EACH collection?

  26. A26

    What must be added to 759 to make 1,000?

  27. A27

    Two collections contain 60 items altogether. One has 18 more than the other. How many are in EACH collection?

  28. A28

    Calculate 1,513 − 98 by using a nearby hundred.

  29. A29

    Explain why (300+57)+43 can be found as 300+(57+43).

  30. A30

    A school library has 241 books. 137 are on the front shelf. How many are elsewhere?

  31. A31

    Leo collected 115 stamps. Mina collected 100 more than Leo. How many does Mina have?

  32. A32

    Use equal adjustment to find 631 − 297.

  33. A33

    Leo collected 177 stamps. Mina collected 118 more than Leo. How many does Mina have?

  34. A34

    Use equal adjustment to find 339 − 99.

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