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Year 1 Maths — Adding and taking away within 20

Add and take away with numbers up to 20, going past ten on the way.

Name: ________________________

  1. 1.Match each sum to its answer.

    • 8 + 6
    • 9 + 9
    • 11 + 5
    • 7 + 6
    • 16
    • 18
    • 13
    • 14

  2. 2.7 + 7 = ?

  3. 3.8 + 5 = ?

  4. 4.Put these sums in order, smallest answer first.

    • 9 + 0
    • 8 + 6
    • 11 - 8
    • 9 + 9

  5. 5.Sort each of these by whether its answer is less than 15 or more than 15.

    Groups: Less than 15 · More than 15

    • 10 + 9
    • 6 + 6
    • 12 + 7
    • 9 + 8
    • 8 + 5
    • 14 - 2

  6. 6.Start at 9 and jump on 7. Tap where you land.

    Mark the line with an X.

    02468101214161820

  7. 7.What do you add to 8 to make 15?

    • a) 6
    • b) 7
    • c) 5
    • d) 9

  8. 8.14 - 6 = ?

Answer key — Year 1 Maths — Adding and taking away within 20

  1. 1. 8 + 6 → 14; 9 + 9 → 18; 11 + 5 → 16; 7 + 6 → 13
  2. 2. 14
  3. 3. 13
  4. 4. 1. 11 - 8 2. 9 + 0 3. 8 + 6 4. 9 + 9
  5. 5. 8 + 5 → Less than 15; 9 + 8 → More than 15; 6 + 6 → Less than 15; 12 + 7 → More than 15; 14 - 2 → Less than 15; 10 + 9 → More than 15
  6. 6. 16
  7. 7. b) 7
  8. 8. 8