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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 + 1 = blank
  2. 2.11 + 10 = blank
  3. 3.6 + 1 = blank
  4. 4.9 + 1 = blank
  5. 5.8 + 8 = blank
  6. 6.3 + 11 = blank
  7. 7.12 + 11 = blank
  8. 8.5 + 7 = blank
  9. 9.1 + 9 = blank
  10. 10.11 + 5 = blank
  11. 11.3 + 5 = blank
  12. 12.2 + 4 = blank
One small step. One stronger skill.12 questions · Seed 48
View the answer key
Worksheet StudioAnswer key

Adding within 12

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 1 = 1
  2. 2.11 + 10 = 21
  3. 3.6 + 1 = 7
  4. 4.9 + 1 = 10
  5. 5.8 + 8 = 16
  6. 6.3 + 11 = 14
  7. 7.12 + 11 = 23
  8. 8.5 + 7 = 12
  9. 9.1 + 9 = 10
  10. 10.11 + 5 = 16
  11. 11.3 + 5 = 8
  12. 12.2 + 4 = 6
One small step. One stronger skill.12 questions · Seed 48
Worksheet StudioMaths practice

Adding within 12

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

Name ____________________Date ______________
  1. 1.0 + 1 = blank
  2. 2.11 + 10 = blank
  3. 3.6 + 1 = blank
  4. 4.9 + 1 = blank
  5. 5.8 + 8 = blank
  6. 6.3 + 11 = blank
  7. 7.12 + 11 = blank
  8. 8.5 + 7 = blank
  9. 9.1 + 9 = blank
  10. 10.11 + 5 = blank
  11. 11.3 + 5 = blank
  12. 12.2 + 4 = blank
One small step. One stronger skill.12 questions · Seed 48
Worksheet StudioAnswer key

Adding within 12

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 1 = 1
  2. 2.11 + 10 = 21
  3. 3.6 + 1 = 7
  4. 4.9 + 1 = 10
  5. 5.8 + 8 = 16
  6. 6.3 + 11 = 14
  7. 7.12 + 11 = 23
  8. 8.5 + 7 = 12
  9. 9.1 + 9 = 10
  10. 10.11 + 5 = 16
  11. 11.3 + 5 = 8
  12. 12.2 + 4 = 6
One small step. One stronger skill.12 questions · Seed 48