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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 331 · 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 + 16 =
  2. 2.5 + 2 + 1 =
  3. 3.There are 5 pink balloons and 8 yellow balloons. How many balloons are there in all?
  4. 4.7 + ? = 8
  5. 5.5 + 12 =
  6. 6.6 + 8 =
  7. 7.8 + 9 =
  8. 8.Saanvi has 8 crayons and gets 6 crayons more. How many crayons does Saanvi have now?
  9. 9.1 + ? = 4
  10. 10.13 + 3 =
  11. 11.There are 12 red flowers and 3 pink flowers. How many flowers are there in all?
  12. 12.6 + ? = 17
  13. 13.Kavya has 11 shells and gets 9 shells more. How many shells does Kavya have now?
  14. 14.There are 6 white crayons and 14 yellow crayons. How many crayons are there in all?
  15. 15.There are 6 yellow crayons and 3 green crayons. How many crayons are there in all?
  16. 16.6 + 4 + 9 =
  17. 17.4 + 5 + 9 =
  18. 18.1 + 2 + 11 =
  19. 19.Zoya has 15 mangoes and gets 3 mangoes more. How many mangoes does Zoya have now?
  20. 20.There are 4 green beads and 16 yellow beads. How many beads are there in all?
  21. 21.? + 3 = 5
  22. 22.Sneha has 10 shells and gets 6 shells more. How many shells does Sneha have now?
  23. 23.4 + 8 =
  24. 24.Rohan has 2 balls and gets 18 balls more. How many balls does Rohan have now?
  25. 25.Gurpreet has 10 balloons and gets 3 balloons more. How many balloons does Gurpreet have now?
  26. 26.There are 5 pink crayons and 3 white crayons. How many crayons are there in all?
  27. 27.4 + 6 =
  28. 28.6 + 4 + 7 =
  29. 29.Diya has 4 books and gets 15 books more. How many books does Diya have now?
  30. 30.16 + 3 =
  31. 31.8 + 1 + 11 =
  32. 32.15 + 4 =
  33. 33.Saanvi has 3 crayons and gets 8 crayons more. How many crayons does Saanvi have now?
  34. 34.3 + ? = 5
  35. 35.2 + 13 =
  36. 36.5 + 7 + 8 =
  37. 37.? + 1 = 18
  38. 38.3 + 2 =
  39. 39.Meera has 8 kites and gets 2 kites more. How many kites does Meera have now?
  40. 40.Pooja has 3 mangoes and gets 14 mangoes more. How many mangoes does Pooja have now?

Answer key

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

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