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Ages 5–7

Adding within 12

Combine two numbers up to 12 to build early mental addition. Review suitability for your learners before teaching.

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Worksheet StudioMaths practice

Adding within 12

Take your time. Show your thinking. You've got this.

Name ____________________Date ______________
  1. 1.0 + 9 = blank
  2. 2.5 + 3 = blank
  3. 3.7 + 4 = blank
  4. 4.8 + 6 = blank
  5. 5.7 + 9 = blank
  6. 6.12 + 8 = blank
  7. 7.8 + 8 = blank
  8. 8.0 + 6 = blank
  9. 9.7 + 10 = blank
  10. 10.12 + 6 = blank
  11. 11.0 + 9 = blank
  12. 12.7 + 9 = blank
One small step. One stronger skill.12 questions · Seed 44
View the answer key
Worksheet StudioAnswer key

Adding within 12

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 9 = 9
  2. 2.5 + 3 = 8
  3. 3.7 + 4 = 11
  4. 4.8 + 6 = 14
  5. 5.7 + 9 = 16
  6. 6.12 + 8 = 20
  7. 7.8 + 8 = 16
  8. 8.0 + 6 = 6
  9. 9.7 + 10 = 17
  10. 10.12 + 6 = 18
  11. 11.0 + 9 = 9
  12. 12.7 + 9 = 16
One small step. One stronger skill.12 questions · Seed 44
Worksheet StudioMaths practice

Adding within 12

Take your time. Show your thinking. You've got this.

Name ____________________Date ______________
  1. 1.0 + 9 = blank
  2. 2.5 + 3 = blank
  3. 3.7 + 4 = blank
  4. 4.8 + 6 = blank
  5. 5.7 + 9 = blank
  6. 6.12 + 8 = blank
  7. 7.8 + 8 = blank
  8. 8.0 + 6 = blank
  9. 9.7 + 10 = blank
  10. 10.12 + 6 = blank
  11. 11.0 + 9 = blank
  12. 12.7 + 9 = blank
One small step. One stronger skill.12 questions · Seed 44
Worksheet StudioAnswer key

Adding within 12

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 9 = 9
  2. 2.5 + 3 = 8
  3. 3.7 + 4 = 11
  4. 4.8 + 6 = 14
  5. 5.7 + 9 = 16
  6. 6.12 + 8 = 20
  7. 7.8 + 8 = 16
  8. 8.0 + 6 = 6
  9. 9.7 + 10 = 17
  10. 10.12 + 6 = 18
  11. 11.0 + 9 = 9
  12. 12.7 + 9 = 16
One small step. One stronger skill.12 questions · Seed 44