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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 564 · 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 + 4 + 13 =
  2. 2.Riya has 13 flowers and gets 4 flowers more. How many flowers does Riya have now?
  3. 3.3 + 5 + 11 =
  4. 4.11 + 9 =
  5. 5.8 + 6 + 2 =
  6. 6.8 + ? = 18
  7. 7.5 + 5 + 3 =
  8. 8.15 + 4 =
  9. 9.17 + 2 =
  10. 10.12 + 1 =
  11. 11.There are 10 yellow balls and 8 blue balls. How many balls are there in all?
  12. 12.5 + 12 =
  13. 13.13 + 2 =
  14. 14.18 + 2 =
  15. 15.There are 2 white crayons and 11 green crayons. How many crayons are there in all?
  16. 16.There are 10 pink crayons and 4 yellow crayons. How many crayons are there in all?
  17. 17.There are 9 green kites and 3 white kites. How many kites are there in all?
  18. 18.7 + 9 =
  19. 19.14 + 6 =
  20. 20.1 + ? = 6
  21. 21.1 + ? = 17
  22. 22.Ishaan has 15 mangoes and gets 1 mango more. How many mangoes does Ishaan have now?
  23. 23.15 + 5 =
  24. 24.Arjun has 5 mangoes and gets 1 mango more. How many mangoes does Arjun have now?
  25. 25.3 + 13 =
  26. 26.There are 2 green crayons and 4 blue crayons. How many crayons are there in all?
  27. 27.? + 7 = 8
  28. 28.8 + 3 + 9 =
  29. 29.6 + ? = 16
  30. 30.2 + ? = 6
  31. 31.There are 2 yellow balloons and 10 blue balloons. How many balloons are there in all?
  32. 32.Manav has 6 balls and gets 8 balls more. How many balls does Manav have now?
  33. 33.Diya has 9 mangoes and gets 9 mangoes more. How many mangoes does Diya have now?
  34. 34.? + 2 = 6
  35. 35.Rohan has 11 kites and gets 6 kites more. How many kites does Rohan have now?
  36. 36.1 + ? = 3
  37. 37.3 + ? = 9
  38. 38.6 + 7 =
  39. 39.There are 5 blue flowers and 2 yellow flowers. How many flowers are there in all?
  40. 40.3 + 4 + 11 =

Answer key

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

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