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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 197 · 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. 1.8 + 6 =
  2. 2.6 + 3 + 8 =
  3. 3.7 + 2 =
  4. 4.There are 12 red flowers and 2 blue flowers. How many flowers are there in all?
  5. 5.There are 2 red crayons and 10 blue crayons. How many crayons are there in all?
  6. 6.3 + 6 + 7 =
  7. 7.7 + 5 =
  8. 8.Meera has 10 marbles and gets 2 marbles more. How many marbles does Meera have now?
  9. 9.3 + ? = 5
  10. 10.There are 2 yellow balloons and 13 blue balloons. How many balloons are there in all?
  11. 11.Diya has 9 marbles and gets 6 marbles more. How many marbles does Diya have now?
  12. 12.3 + 8 + 1 =
  13. 13.Joseph has 3 flowers and gets 15 flowers more. How many flowers does Joseph have now?
  14. 14.8 + 1 + 2 =
  15. 15.Diya has 2 balls and gets 4 balls more. How many balls does Diya have now?
  16. 16.? + 6 = 15
  17. 17.1 + 4 + 2 =
  18. 18.12 + 4 =
  19. 19.2 + 6 =
  20. 20.There are 5 white balls and 3 pink balls. How many balls are there in all?
  21. 21.Dev has 2 kites and gets 17 kites more. How many kites does Dev have now?
  22. 22.16 + 4 =
  23. 23.? + 5 = 10
  24. 24.There are 5 yellow flowers and 14 pink flowers. How many flowers are there in all?
  25. 25.1 + ? = 11
  26. 26.Karan has 10 mangoes and gets 4 mangoes more. How many mangoes does Karan have now?
  27. 27.3 + 1 + 11 =
  28. 28.There are 4 blue beads and 4 yellow beads. How many beads are there in all?
  29. 29.Kabir has 14 mangoes and gets 5 mangoes more. How many mangoes does Kabir have now?
  30. 30.9 + 7 =
  31. 31.There are 12 pink flowers and 6 white flowers. How many flowers are there in all?
  32. 32.Diya has 8 marbles and gets 6 marbles more. How many marbles does Diya have now?
  33. 33.8 + 3 + 9 =
  34. 34.There are 8 white balloons and 7 red balloons. How many balloons are there in all?
  35. 35.9 + ? = 11
  36. 36.10 + ? = 13
  37. 37.14 + 1 =
  38. 38.14 + 4 =
  39. 39.17 + 3 =
  40. 40.There are 11 blue balloons and 4 green balloons. How many balloons are there in all?

Answer key

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

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