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Ages 8–10

Mental addition to 50

Add tens and ones mentally with sums up to 100. Review suitability for your learners before teaching.

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Worksheet StudioMaths practice

Mental addition to 50

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

Name ____________________Date ______________
  1. 1.0 + 50 = blank
  2. 2.13 + 46 = blank
  3. 3.25 + 46 = blank
  4. 4.10 + 36 = blank
  5. 5.18 + 48 = blank
  6. 6.10 + 17 = blank
  7. 7.18 + 2 = blank
  8. 8.41 + 2 = blank
  9. 9.10 + 39 = blank
  10. 10.6 + 21 = blank
  11. 11.49 + 1 = blank
  12. 12.14 + 35 = blank
One small step. One stronger skill.12 questions · Seed 47
View the answer key
Worksheet StudioAnswer key

Mental addition to 50

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 50 = 50
  2. 2.13 + 46 = 59
  3. 3.25 + 46 = 71
  4. 4.10 + 36 = 46
  5. 5.18 + 48 = 66
  6. 6.10 + 17 = 27
  7. 7.18 + 2 = 20
  8. 8.41 + 2 = 43
  9. 9.10 + 39 = 49
  10. 10.6 + 21 = 27
  11. 11.49 + 1 = 50
  12. 12.14 + 35 = 49
One small step. One stronger skill.12 questions · Seed 47
Worksheet StudioMaths practice

Mental addition to 50

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

Name ____________________Date ______________
  1. 1.0 + 50 = blank
  2. 2.13 + 46 = blank
  3. 3.25 + 46 = blank
  4. 4.10 + 36 = blank
  5. 5.18 + 48 = blank
  6. 6.10 + 17 = blank
  7. 7.18 + 2 = blank
  8. 8.41 + 2 = blank
  9. 9.10 + 39 = blank
  10. 10.6 + 21 = blank
  11. 11.49 + 1 = blank
  12. 12.14 + 35 = blank
One small step. One stronger skill.12 questions · Seed 47
Worksheet StudioAnswer key

Mental addition to 50

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 50 = 50
  2. 2.13 + 46 = 59
  3. 3.25 + 46 = 71
  4. 4.10 + 36 = 46
  5. 5.18 + 48 = 66
  6. 6.10 + 17 = 27
  7. 7.18 + 2 = 20
  8. 8.41 + 2 = 43
  9. 9.10 + 39 = 49
  10. 10.6 + 21 = 27
  11. 11.49 + 1 = 50
  12. 12.14 + 35 = 49
One small step. One stronger skill.12 questions · Seed 47