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Add and Subtract Within 1000 is a free printable Grade 2 math worksheet on judging three-digit sums and differences, aligned to Common Core standard 2.NBT.B.7. It prints 12 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 5 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Add and Subtract Within 1000

2.NBT.B.7

NameDate

Write true or false. If false, write the right answer.

1.True or false? 396 + 67 = 353
2.True or false? 500 − 27 = 473
3.True or false? 594 + 53 = 647
4.True or false? 781 − 59 = 722
5.True or false? 896 + 45 = 831
6.True or false? 302 − 42 = 340
7.True or false? 281 + 22 = 203
8.True or false? 766 + 90 = 756
9.True or false? 145 − 50 = 95
10.True or false? 143 + 62 = 205
11.True or false? 652 − 28 = 636
12.True or false? 660 − 43 = 617

LessonPrint · 2.NBT.B.7 · Set 5 · free to copy for classroom use

Answer key — Add and Subtract Within 1000

Set 5. Prints on its own sheet.

  1. 1.false — 463
  2. 2.true
  3. 3.true
  4. 4.true
  5. 5.false — 941
  6. 6.false — 260
  7. 7.false — 303
  8. 8.false — 856
  9. 9.true
  10. 10.true
  11. 11.false — 624
  12. 12.true

Last reviewed 2026-09-05. Aligned to 2.NBT.B.7 of the Common Core State Standards for Mathematics.