3A · Chapter 2 · Practice
Practice A
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 · 18 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.
- A1
Add 2,003 + 345. Show a place-value breakdown.
- A2
Add 2,129 + 397. Show a place-value breakdown.
- A3
Add 2,255 + 271. Show a place-value breakdown.
- A4
Find 99 + 401 using compensation.
- A5
Find 198 + 453 using compensation.
- A6
Find 297 + 505 using compensation.
- A7
Find 2,678 − 635 by breaking apart the amount subtracted.
- A8
Find 2,678 − 509 by breaking apart the amount subtracted.
- A9
Find 2,856 − 561 by breaking apart the amount subtracted.
- A10
Use equal adjustment to find 509 − 99.
- A11
Use equal adjustment to find 655 − 198.
- A12
Use equal adjustment to find 451 − 297.
- A13
What must be added to 88 to make 100?
- A14
What must be added to 9 to make 1,000?
- A15
What must be added to 70 to make 100?
- A16
Calculate 2,003 − 98 by using a nearby hundred.
- A17
Calculate 2,129 + 199 by using a nearby hundred.
- A18
Calculate 2,255 − 301 by using a nearby hundred.