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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 131 · 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.Tara has 13 balls and gets 2 balls more. How many balls does Tara have now?
  2. 2.Meera has 6 books and gets 10 books more. How many books does Meera have now?
  3. 3.? + 5 = 8
  4. 4.4 + 7 + 1 =
  5. 5.4 + 3 + 8 =
  6. 6.1 + ? = 9
  7. 7.11 + 9 =
  8. 8.1 + 1 + 7 =
  9. 9.1 + 8 + 2 =
  10. 10.1 + ? = 6
  11. 11.8 + 12 =
  12. 12.? + 5 = 9
  13. 13.8 + 3 + 3 =
  14. 14.1 + ? = 12
  15. 15.4 + 2 + 12 =
  16. 16.9 + ? = 11
  17. 17.5 + 8 + 7 =
  18. 18.3 + 17 =
  19. 19.4 + 5 + 9 =
  20. 20.4 + 7 + 9 =
  21. 21.Diya has 11 shells and gets 1 shell more. How many shells does Diya have now?
  22. 22.Diya has 4 mangoes and gets 3 mangoes more. How many mangoes does Diya have now?
  23. 23.15 + 3 =
  24. 24.19 + 1 =
  25. 25.2 + 8 + 9 =
  26. 26.6 + 12 =
  27. 27.Vivaan has 6 kites and gets 12 kites more. How many kites does Vivaan have now?
  28. 28.Priya has 10 crayons and gets 1 crayon more. How many crayons does Priya have now?
  29. 29.1 + 3 =
  30. 30.1 + 19 =
  31. 31.2 + 1 + 6 =
  32. 32.3 + 14 =
  33. 33.Arjun has 2 shells and gets 16 shells more. How many shells does Arjun have now?
  34. 34.2 + ? = 3
  35. 35.1 + 6 + 7 =
  36. 36.10 + 7 =
  37. 37.Aditya has 13 balls and gets 7 balls more. How many balls does Aditya have now?
  38. 38.Aarav has 10 crayons and gets 10 crayons more. How many crayons does Aarav have now?
  39. 39.There are 2 red flowers and 6 yellow flowers. How many flowers are there in all?
  40. 40.? + 10 = 13

Answer key

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

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