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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 764 · 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 + 1 + 4 =
  2. 2.10 + 3 =
  3. 3.19 + 1 =
  4. 4.1 + 2 + 6 =
  5. 5.18 + 2 =
  6. 6.There are 9 red flowers and 9 blue flowers. How many flowers are there in all?
  7. 7.Meera has 14 shells and gets 1 shell more. How many shells does Meera have now?
  8. 8.Aditya has 13 balls and gets 3 balls more. How many balls does Aditya have now?
  9. 9.1 + 5 + 9 =
  10. 10.There are 10 pink flowers and 10 red flowers. How many flowers are there in all?
  11. 11.10 + 10 =
  12. 12.5 + 13 =
  13. 13.There are 6 pink flowers and 13 blue flowers. How many flowers are there in all?
  14. 14.? + 5 = 14
  15. 15.6 + 12 =
  16. 16.7 + 12 =
  17. 17.11 + ? = 14
  18. 18.There are 6 pink flowers and 14 yellow flowers. How many flowers are there in all?
  19. 19.There are 12 yellow balls and 4 white balls. How many balls are there in all?
  20. 20.4 + 4 + 1 =
  21. 21.Dev has 14 crayons and gets 6 crayons more. How many crayons does Dev have now?
  22. 22.8 + 5 + 2 =
  23. 23.? + 1 = 3
  24. 24.There are 5 blue crayons and 2 white crayons. How many crayons are there in all?
  25. 25.Manav has 10 balls and gets 2 balls more. How many balls does Manav have now?
  26. 26.7 + 11 =
  27. 27.1 + 6 + 3 =
  28. 28.There are 4 white kites and 7 pink kites. How many kites are there in all?
  29. 29.There are 7 pink crayons and 8 green crayons. How many crayons are there in all?
  30. 30.Rahul has 3 balls and gets 12 balls more. How many balls does Rahul have now?
  31. 31.2 + 5 + 10 =
  32. 32.12 + ? = 18
  33. 33.There are 11 red balloons and 6 pink balloons. How many balloons are there in all?
  34. 34.4 + ? = 16
  35. 35.2 + 1 + 13 =
  36. 36.Karan has 10 balloons and gets 7 balloons more. How many balloons does Karan have now?
  37. 37.8 + 7 + 3 =
  38. 38.Ishaan has 5 flowers and gets 11 flowers more. How many flowers does Ishaan have now?
  39. 39.12 + 3 =
  40. 40.8 + 4 =

Answer key

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

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