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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 992 · 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.There are 4 green balloons and 4 yellow balloons. How many balloons are there in all?
  2. 2.5 + 1 + 1 =
  3. 3.Rahul has 15 shells and gets 1 shell more. How many shells does Rahul have now?
  4. 4.Nisha has 5 marbles and gets 1 marble more. How many marbles does Nisha have now?
  5. 5.4 + ? = 14
  6. 6.There are 6 red balloons and 3 white balloons. How many balloons are there in all?
  7. 7.Isha has 3 crayons and gets 14 crayons more. How many crayons does Isha have now?
  8. 8.Manav has 10 books and gets 8 books more. How many books does Manav have now?
  9. 9.? + 3 = 12
  10. 10.There are 6 green balloons and 12 red balloons. How many balloons are there in all?
  11. 11.Kavya has 14 balloons and gets 4 balloons more. How many balloons does Kavya have now?
  12. 12.19 + 1 =
  13. 13.? + 5 = 20
  14. 14.There are 2 white crayons and 6 green crayons. How many crayons are there in all?
  15. 15.6 + ? = 10
  16. 16.1 + 1 + 5 =
  17. 17.10 + 9 =
  18. 18.2 + 7 =
  19. 19.16 + 4 =
  20. 20.4 + 9 =
  21. 21.7 + ? = 12
  22. 22.Rohan has 9 crayons and gets 1 crayon more. How many crayons does Rohan have now?
  23. 23.? + 6 = 14
  24. 24.Riya has 7 balls and gets 5 balls more. How many balls does Riya have now?
  25. 25.There are 11 white balls and 5 red balls. How many balls are there in all?
  26. 26.There are 12 red balloons and 7 yellow balloons. How many balloons are there in all?
  27. 27.7 + ? = 8
  28. 28.There are 5 red balls and 12 green balls. How many balls are there in all?
  29. 29.? + 6 = 7
  30. 30.Saanvi has 7 marbles and gets 9 marbles more. How many marbles does Saanvi have now?
  31. 31.7 + 7 + 2 =
  32. 32.There are 2 blue balloons and 6 red balloons. How many balloons are there in all?
  33. 33.6 + 9 =
  34. 34.2 + 5 + 8 =
  35. 35.11 + 4 =
  36. 36.2 + ? = 12
  37. 37.? + 4 = 20
  38. 38.Lakshmi has 7 shells and gets 3 shells more. How many shells does Lakshmi have now?
  39. 39.2 + 2 + 2 =
  40. 40.Saanvi has 4 books and gets 9 books more. How many books does Saanvi have now?

Answer key

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

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