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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 + 10 = blank
  2. 2.0 + 1 = blank
  3. 3.7 + 6 = blank
  4. 4.2 + 11 = blank
  5. 5.10 + 5 = blank
  6. 6.0 + 2 = blank
  7. 7.2 + 5 = blank
  8. 8.8 + 0 = blank
  9. 9.5 + 10 = blank
  10. 10.8 + 6 = blank
  11. 11.4 + 2 = blank
  12. 12.6 + 5 = blank
One small step. One stronger skill.12 questions · Seed 45
View the answer key
Worksheet StudioAnswer key

Adding within 12

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 10 = 10
  2. 2.0 + 1 = 1
  3. 3.7 + 6 = 13
  4. 4.2 + 11 = 13
  5. 5.10 + 5 = 15
  6. 6.0 + 2 = 2
  7. 7.2 + 5 = 7
  8. 8.8 + 0 = 8
  9. 9.5 + 10 = 15
  10. 10.8 + 6 = 14
  11. 11.4 + 2 = 6
  12. 12.6 + 5 = 11
One small step. One stronger skill.12 questions · Seed 45
Worksheet StudioMaths practice

Adding within 12

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

Name ____________________Date ______________
  1. 1.0 + 10 = blank
  2. 2.0 + 1 = blank
  3. 3.7 + 6 = blank
  4. 4.2 + 11 = blank
  5. 5.10 + 5 = blank
  6. 6.0 + 2 = blank
  7. 7.2 + 5 = blank
  8. 8.8 + 0 = blank
  9. 9.5 + 10 = blank
  10. 10.8 + 6 = blank
  11. 11.4 + 2 = blank
  12. 12.6 + 5 = blank
One small step. One stronger skill.12 questions · Seed 45
Worksheet StudioAnswer key

Adding within 12

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 10 = 10
  2. 2.0 + 1 = 1
  3. 3.7 + 6 = 13
  4. 4.2 + 11 = 13
  5. 5.10 + 5 = 15
  6. 6.0 + 2 = 2
  7. 7.2 + 5 = 7
  8. 8.8 + 0 = 8
  9. 9.5 + 10 = 15
  10. 10.8 + 6 = 14
  11. 11.4 + 2 = 6
  12. 12.6 + 5 = 11
One small step. One stronger skill.12 questions · Seed 45