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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 926 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.? + 3 = 20
  2. 2.7 + 12 =
  3. 3.Priya has 11 balls and gets 5 balls more. How many balls does Priya have now?
  4. 4.4 + 6 + 9 =
  5. 5.6 + ? = 14
  6. 6.There are 3 blue balloons and 2 yellow balloons. How many balloons are there in all?
  7. 7.Diya has 4 pencils and gets 11 pencils more. How many pencils does Diya have now?
  8. 8.12 + ? = 18
  9. 9.6 + 1 =
  10. 10.3 + ? = 4
  11. 11.8 + 10 =
  12. 12.1 + 4 + 7 =
  13. 13.? + 5 = 17
  14. 14.2 + 3 + 7 =
  15. 15.11 + 3 =
  16. 16.? + 9 = 12
  17. 17.Joseph has 11 bananas and gets 1 banana more. How many bananas does Joseph have now?
  18. 18.12 + 1 =
  19. 19.Kabir has 2 bananas and gets 14 bananas more. How many bananas does Kabir have now?
  20. 20.2 + 4 + 1 =
  21. 21.14 + 3 =
  22. 22.Priya has 6 crayons and gets 3 crayons more. How many crayons does Priya have now?
  23. 23.10 + 8 =
  24. 24.2 + ? = 11
  25. 25.There are 5 red balloons and 5 pink balloons. How many balloons are there in all?
  26. 26.Rohan has 10 kites and gets 1 kite more. How many kites does Rohan have now?
  27. 27.3 + ? = 10
  28. 28.2 + 2 + 3 =
  29. 29.8 + ? = 18
  30. 30.? + 7 = 18
  31. 31.3 + 6 =
  32. 32.There are 10 blue crayons and 4 yellow crayons. How many crayons are there in all?
  33. 33.There are 12 red flowers and 5 yellow flowers. How many flowers are there in all?
  34. 34.There are 8 red balloons and 12 green balloons. How many balloons are there in all?
  35. 35.? + 5 = 14
  36. 36.5 + 12 =
  37. 37.1 + ? = 7
  38. 38.4 + 2 + 12 =
  39. 39.2 + 1 + 15 =
  40. 40.2 + 13 =

Answer key

  1. 17
  2. 19
  3. 16
  4. 19
  5. 8
  6. 5
  7. 15
  8. 6
  9. 7
  10. 1
  11. 18
  12. 12
  13. 12
  14. 12
  15. 14
  16. 3
  17. 12
  18. 13
  19. 16
  20. 7
  21. 17
  22. 9
  23. 18
  24. 9
  25. 10
  26. 11
  27. 7
  28. 7
  29. 10
  30. 11
  31. 9
  32. 14
  33. 17
  34. 20
  35. 9
  36. 17
  37. 6
  38. 18
  39. 18
  40. 15

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