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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 257 · 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. 1.1 + ? = 5
  2. 2.Ananya has 11 crayons and gets 9 crayons more. How many crayons does Ananya have now?
  3. 3.7 + 4 + 5 =
  4. 4.3 + 5 + 9 =
  5. 5.Riya has 8 mangoes and gets 9 mangoes more. How many mangoes does Riya have now?
  6. 6.7 + 1 + 3 =
  7. 7.1 + ? = 7
  8. 8.17 + 2 =
  9. 9.5 + 3 + 12 =
  10. 10.1 + ? = 8
  11. 11.3 + 1 =
  12. 12.14 + ? = 20
  13. 13.19 + 1 =
  14. 14.17 + 1 =
  15. 15.5 + ? = 6
  16. 16.3 + 8 + 9 =
  17. 17.? + 13 = 16
  18. 18.? + 10 = 11
  19. 19.12 + 8 =
  20. 20.Ishaan has 6 laddoos and gets 9 laddoos more. How many laddoos does Ishaan have now?
  21. 21.4 + 6 + 10 =
  22. 22.3 + 2 =
  23. 23.Vivaan has 4 shells and gets 1 shell more. How many shells does Vivaan have now?
  24. 24.? + 2 = 9
  25. 25.3 + ? = 5
  26. 26.Gurpreet has 14 balls and gets 1 ball more. How many balls does Gurpreet have now?
  27. 27.There are 5 pink kites and 6 red kites. How many kites are there in all?
  28. 28.? + 2 = 5
  29. 29.Zoya has 5 bananas and gets 9 bananas more. How many bananas does Zoya have now?
  30. 30.? + 9 = 17
  31. 31.8 + 2 + 4 =
  32. 32.4 + 5 + 7 =
  33. 33.2 + 18 =
  34. 34.There are 11 pink balls and 4 red balls. How many balls are there in all?
  35. 35.4 + 4 + 8 =
  36. 36.6 + 8 + 2 =
  37. 37.3 + 10 =
  38. 38.8 + 2 =
  39. 39.14 + 2 =
  40. 40.Zoya has 5 laddoos and gets 12 laddoos more. How many laddoos does Zoya have now?

Answer key

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

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