Small practice. Bright discoveries.Explore the free starter collection
worksheetstudio.
Sign in
Back to worksheets
Ages 8–10

Mental addition to 50

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

New variationBrowse templates

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioMaths practice

Mental addition to 50

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

Name ____________________Date ______________
  1. 1.0 + 46 = blank
  2. 2.33 + 0 = blank
  3. 3.26 + 37 = blank
  4. 4.35 + 15 = blank
  5. 5.4 + 10 = blank
  6. 6.6 + 39 = blank
  7. 7.39 + 12 = blank
  8. 8.11 + 27 = blank
  9. 9.16 + 39 = blank
  10. 10.20 + 23 = blank
  11. 11.34 + 30 = blank
  12. 12.19 + 1 = blank
One small step. One stronger skill.12 questions · Seed 46
View the answer key
Worksheet StudioAnswer key

Mental addition to 50

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 46 = 46
  2. 2.33 + 0 = 33
  3. 3.26 + 37 = 63
  4. 4.35 + 15 = 50
  5. 5.4 + 10 = 14
  6. 6.6 + 39 = 45
  7. 7.39 + 12 = 51
  8. 8.11 + 27 = 38
  9. 9.16 + 39 = 55
  10. 10.20 + 23 = 43
  11. 11.34 + 30 = 64
  12. 12.19 + 1 = 20
One small step. One stronger skill.12 questions · Seed 46
Worksheet StudioMaths practice

Mental addition to 50

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

Name ____________________Date ______________
  1. 1.0 + 46 = blank
  2. 2.33 + 0 = blank
  3. 3.26 + 37 = blank
  4. 4.35 + 15 = blank
  5. 5.4 + 10 = blank
  6. 6.6 + 39 = blank
  7. 7.39 + 12 = blank
  8. 8.11 + 27 = blank
  9. 9.16 + 39 = blank
  10. 10.20 + 23 = blank
  11. 11.34 + 30 = blank
  12. 12.19 + 1 = blank
One small step. One stronger skill.12 questions · Seed 46
Worksheet StudioAnswer key

Mental addition to 50

Use this page to check your work.

Name ____________________Date ______________
  1. 1.0 + 46 = 46
  2. 2.33 + 0 = 33
  3. 3.26 + 37 = 63
  4. 4.35 + 15 = 50
  5. 5.4 + 10 = 14
  6. 6.6 + 39 = 45
  7. 7.39 + 12 = 51
  8. 8.11 + 27 = 38
  9. 9.16 + 39 = 55
  10. 10.20 + 23 = 43
  11. 11.34 + 30 = 64
  12. 12.19 + 1 = 20
One small step. One stronger skill.12 questions · Seed 46