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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 229 · 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.? + 12 = 13
  2. 2.16 + 1 =
  3. 3.8 + 11 =
  4. 4.1 + ? = 6
  5. 5.12 + 1 =
  6. 6.? + 2 = 17
  7. 7.6 + 1 + 2 =
  8. 8.Kavya has 9 kites and gets 10 kites more. How many kites does Kavya have now?
  9. 9.There are 2 pink balls and 10 white balls. How many balls are there in all?
  10. 10.3 + 14 =
  11. 11.There are 8 blue crayons and 9 red crayons. How many crayons are there in all?
  12. 12.There are 11 pink balls and 7 blue balls. How many balls are there in all?
  13. 13.12 + 7 =
  14. 14.There are 4 pink kites and 11 blue kites. How many kites are there in all?
  15. 15.3 + 5 + 11 =
  16. 16.5 + 1 + 13 =
  17. 17.Lakshmi has 8 marbles and gets 7 marbles more. How many marbles does Lakshmi have now?
  18. 18.11 + ? = 17
  19. 19.7 + ? = 20
  20. 20.There are 12 blue balls and 4 white balls. How many balls are there in all?
  21. 21.5 + 4 =
  22. 22.There are 12 white flowers and 4 green flowers. How many flowers are there in all?
  23. 23.Ananya has 9 crayons and gets 5 crayons more. How many crayons does Ananya have now?
  24. 24.There are 7 green kites and 5 red kites. How many kites are there in all?
  25. 25.3 + 1 =
  26. 26.1 + 14 =
  27. 27.Aarav has 4 balloons and gets 9 balloons more. How many balloons does Aarav have now?
  28. 28.? + 16 = 18
  29. 29.18 + 1 =
  30. 30.There are 12 pink beads and 7 white beads. How many beads are there in all?
  31. 31.There are 9 red balloons and 4 white balloons. How many balloons are there in all?
  32. 32.6 + 2 + 9 =
  33. 33.6 + 8 + 2 =
  34. 34.Riya has 10 pencils and gets 5 pencils more. How many pencils does Riya have now?
  35. 35.There are 10 white crayons and 6 red crayons. How many crayons are there in all?
  36. 36.Meera has 3 marbles and gets 6 marbles more. How many marbles does Meera have now?
  37. 37.There are 9 white flowers and 7 pink flowers. How many flowers are there in all?
  38. 38.1 + 2 + 16 =
  39. 39.3 + ? = 7
  40. 40.4 + 13 =

Answer key

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

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