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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 783 · 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 8 green kites and 8 blue kites. How many kites are there in all?
  2. 2.1 + 3 + 9 =
  3. 3.1 + 14 =
  4. 4.2 + 4 =
  5. 5.4 + 5 + 1 =
  6. 6.3 + ? = 6
  7. 7.2 + 2 + 1 =
  8. 8.Kavya has 2 shells and gets 10 shells more. How many shells does Kavya have now?
  9. 9.There are 4 blue beads and 16 pink beads. How many beads are there in all?
  10. 10.6 + 7 + 1 =
  11. 11.13 + 6 =
  12. 12.Isha has 12 balloons and gets 6 balloons more. How many balloons does Isha have now?
  13. 13.2 + ? = 7
  14. 14.18 + 1 =
  15. 15.15 + 4 =
  16. 16.5 + 14 =
  17. 17.Lakshmi has 13 balls and gets 5 balls more. How many balls does Lakshmi have now?
  18. 18.1 + ? = 6
  19. 19.4 + 8 + 3 =
  20. 20.Vivaan has 11 crayons and gets 7 crayons more. How many crayons does Vivaan have now?
  21. 21.10 + ? = 13
  22. 22.? + 7 = 14
  23. 23.6 + ? = 7
  24. 24.Zoya has 4 balls and gets 3 balls more. How many balls does Zoya have now?
  25. 25.2 + 6 + 8 =
  26. 26.There are 2 blue crayons and 11 yellow crayons. How many crayons are there in all?
  27. 27.There are 6 red flowers and 9 blue flowers. How many flowers are there in all?
  28. 28.There are 3 red beads and 8 blue beads. How many beads are there in all?
  29. 29.4 + 10 =
  30. 30.There are 2 yellow balloons and 17 white balloons. How many balloons are there in all?
  31. 31.Riya has 12 mangoes and gets 4 mangoes more. How many mangoes does Riya have now?
  32. 32.There are 2 white balls and 6 yellow balls. How many balls are there in all?
  33. 33.There are 8 red balls and 2 blue balls. How many balls are there in all?
  34. 34.There are 4 yellow balloons and 13 pink balloons. How many balloons are there in all?
  35. 35.Zoya has 4 mangoes and gets 10 mangoes more. How many mangoes does Zoya have now?
  36. 36.1 + 7 + 12 =
  37. 37.12 + 3 =
  38. 38.8 + 1 + 6 =
  39. 39.7 + 1 =
  40. 40.7 + 1 + 10 =

Answer key

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

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