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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 864 · 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. 1.7 + 11 =
  2. 2.7 + 3 + 2 =
  3. 3.There are 12 pink balls and 2 blue balls. How many balls are there in all?
  4. 4.7 + 4 + 1 =
  5. 5.? + 2 = 9
  6. 6.Nisha has 6 marbles and gets 8 marbles more. How many marbles does Nisha have now?
  7. 7.3 + 1 + 3 =
  8. 8.10 + 5 =
  9. 9.1 + 2 + 5 =
  10. 10.1 + 1 + 4 =
  11. 11.8 + 6 + 4 =
  12. 12.3 + 8 =
  13. 13.10 + 6 =
  14. 14.There are 9 pink flowers and 11 yellow flowers. How many flowers are there in all?
  15. 15.7 + 4 + 9 =
  16. 16.There are 11 pink balloons and 4 yellow balloons. How many balloons are there in all?
  17. 17.8 + 2 + 1 =
  18. 18.1 + 2 + 16 =
  19. 19.Diya has 2 pencils and gets 4 pencils more. How many pencils does Diya have now?
  20. 20.? + 2 = 4
  21. 21.4 + 10 =
  22. 22.1 + ? = 11
  23. 23.? + 16 = 17
  24. 24.? + 7 = 14
  25. 25.1 + 10 =
  26. 26.13 + 2 =
  27. 27.7 + 7 + 4 =
  28. 28.Karan has 13 marbles and gets 6 marbles more. How many marbles does Karan have now?
  29. 29.Lakshmi has 5 marbles and gets 3 marbles more. How many marbles does Lakshmi have now?
  30. 30.17 + ? = 18
  31. 31.Nisha has 4 laddoos and gets 15 laddoos more. How many laddoos does Nisha have now?
  32. 32.6 + 3 + 4 =
  33. 33.Rohan has 2 shells and gets 3 shells more. How many shells does Rohan have now?
  34. 34.6 + 6 + 4 =
  35. 35.1 + 7 + 11 =
  36. 36.There are 5 yellow balloons and 14 green balloons. How many balloons are there in all?
  37. 37.17 + 2 =
  38. 38.5 + ? = 7
  39. 39.5 + 8 + 6 =
  40. 40.There are 10 red balloons and 2 green balloons. How many balloons are there in all?

Answer key

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

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