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Ages 9–11

Hundred-frame addition

Strengthen mental and column addition up to 100 + 100. Review suitability for your learners before teaching.

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Worksheet StudioMaths practice

Hundred-frame addition

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

Name ____________________Date ______________
  1. 1.0 + 57 = blank
  2. 2.25 + 45 = blank
  3. 3.66 + 97 = blank
  4. 4.63 + 72 = blank
  5. 5.4 + 22 = blank
  6. 6.76 + 54 = blank
  7. 7.45 + 0 = blank
  8. 8.86 + 49 = blank
  9. 9.82 + 80 = blank
  10. 10.50 + 60 = blank
  11. 11.48 + 90 = blank
  12. 12.78 + 43 = blank
One small step. One stronger skill.12 questions · Seed 42
View the answer key
Worksheet StudioAnswer key

Hundred-frame addition

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 57 = 57
  2. 2.25 + 45 = 70
  3. 3.66 + 97 = 163
  4. 4.63 + 72 = 135
  5. 5.4 + 22 = 26
  6. 6.76 + 54 = 130
  7. 7.45 + 0 = 45
  8. 8.86 + 49 = 135
  9. 9.82 + 80 = 162
  10. 10.50 + 60 = 110
  11. 11.48 + 90 = 138
  12. 12.78 + 43 = 121
One small step. One stronger skill.12 questions · Seed 42
Worksheet StudioMaths practice

Hundred-frame addition

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

Name ____________________Date ______________
  1. 1.0 + 57 = blank
  2. 2.25 + 45 = blank
  3. 3.66 + 97 = blank
  4. 4.63 + 72 = blank
  5. 5.4 + 22 = blank
  6. 6.76 + 54 = blank
  7. 7.45 + 0 = blank
  8. 8.86 + 49 = blank
  9. 9.82 + 80 = blank
  10. 10.50 + 60 = blank
  11. 11.48 + 90 = blank
  12. 12.78 + 43 = blank
One small step. One stronger skill.12 questions · Seed 42
Worksheet StudioAnswer key

Hundred-frame addition

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 57 = 57
  2. 2.25 + 45 = 70
  3. 3.66 + 97 = 163
  4. 4.63 + 72 = 135
  5. 5.4 + 22 = 26
  6. 6.76 + 54 = 130
  7. 7.45 + 0 = 45
  8. 8.86 + 49 = 135
  9. 9.82 + 80 = 162
  10. 10.50 + 60 = 110
  11. 11.48 + 90 = 138
  12. 12.78 + 43 = 121
One small step. One stronger skill.12 questions · Seed 42