Fluent addition and subtraction · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.
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Fast facts, big jumps

Mathematics · Addition & Subtraction · ages 6-7
Name ______________________   Date ____________

  1. What is 15 minus 8?

    • 6
    • 7
    • 8

  2. Which addition fact checks 17 − 8 = 9?

    • 9 + 8 = 17
    • 17 + 8 = 25
    • 9 + 9 = 18
    • 8 + 8 = 16

  3. Use 8 + 8 = 16 to work out 8 + 9.

    Answer: ______________

  4. What is 7 + 8?

    • 14
    • 15
    • 16

  5. Leo solves 54 + 6 by using 4 + 6 = 10. He leaves out the 50 and gives 10 as his total. Is that correct?

    Circle one:   True   False

  6. What is 70 − 20?

    • 30
    • 50
    • 40
    • 60

  7. 28 + [ ] = 30. What number fills the box?

    Answer: ______________

  8. What is 16 minus 9?

    • 8
    • 6
    • 7

  9. Tom solves 45 + 5. He makes 10 ones, but counts them as 1 one. He adds 40 + 1 and gets 41. What is the total?

    • 50
    • 41
    • 40

  10. Dan checks 38 + 2 = 40 by working out 40 − 2 = 38. Does this take-away fact check his addition?

    Circle one:   True   False

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Answer key

For grown-ups. Fold this page away before handing over the rest.

Fast facts, big jumps W1-mt_3e_PQxwC12-s1

  1. 7 · 15 minus 8 = 7. It is the flip side of 7 + 8 = 15.
  2. 9 + 8 = 17 · Add the answer 9 to the part taken away, 8. Their total should be 17.
  3. 17 · 9 is one more than 8, so the total is one more than 16: 17.
  4. 15 · Split 8 into 3 and 5. Then 7 + 3 = 10 and 10 + 5 = 15.
  5. False · Keep the 50. The ones make 10, so join 50 and 10 to get 60.
  6. 50 · 7 tens take away 2 tens leave 5 tens, which is 50.
  7. 2 · The ones need 2 more because 8 + 2 = 10. So 28 + 2 = 30.
  8. 7 · 16 minus 9 = 7. Think: 9 + 7 = 16, so taking away 9 leaves 7.
  9. 50 · 10 ones make one ten, not one single one. Join 40 and 10 to get 50.
  10. True · Yes. Taking the added 2 from the total 40 returns to the starting 38.
Worksheet · LightMySky