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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 125 · 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.Joseph has 13 crayons and gets 4 crayons more. How many crayons does Joseph have now?
  2. 2.1 + 4 + 13 =
  3. 3.? + 9 = 20
  4. 4.There are 6 white kites and 4 blue kites. How many kites are there in all?
  5. 5.2 + 2 =
  6. 6.7 + 6 + 3 =
  7. 7.6 + ? = 9
  8. 8.Nisha has 3 balls and gets 12 balls more. How many balls does Nisha have now?
  9. 9.Diya has 9 kites and gets 10 kites more. How many kites does Diya have now?
  10. 10.8 + 7 + 2 =
  11. 11.There are 4 yellow flowers and 4 red flowers. How many flowers are there in all?
  12. 12.8 + 1 + 6 =
  13. 13.Manav has 2 balls and gets 1 ball more. How many balls does Manav have now?
  14. 14.There are 3 red flowers and 5 yellow flowers. How many flowers are there in all?
  15. 15.? + 8 = 10
  16. 16.2 + ? = 10
  17. 17.3 + 7 + 4 =
  18. 18.There are 4 yellow balloons and 7 pink balloons. How many balloons are there in all?
  19. 19.3 + 1 + 6 =
  20. 20.8 + 7 =
  21. 21.There are 11 red beads and 9 blue beads. How many beads are there in all?
  22. 22.3 + 4 + 6 =
  23. 23.Vivaan has 14 shells and gets 3 shells more. How many shells does Vivaan have now?
  24. 24.Gurpreet has 2 balls and gets 4 balls more. How many balls does Gurpreet have now?
  25. 25.Manav has 11 balloons and gets 5 balloons more. How many balloons does Manav have now?
  26. 26.There are 11 blue flowers and 5 green flowers. How many flowers are there in all?
  27. 27.1 + ? = 6
  28. 28.There are 10 blue balloons and 3 green balloons. How many balloons are there in all?
  29. 29.Meera has 15 crayons and gets 5 crayons more. How many crayons does Meera have now?
  30. 30.4 + ? = 10
  31. 31.Lakshmi has 9 crayons and gets 5 crayons more. How many crayons does Lakshmi have now?
  32. 32.There are 3 pink flowers and 4 red flowers. How many flowers are there in all?
  33. 33.There are 7 pink balloons and 7 yellow balloons. How many balloons are there in all?
  34. 34.Tara has 6 pencils and gets 12 pencils more. How many pencils does Tara have now?
  35. 35.6 + 8 =
  36. 36.7 + 6 + 5 =
  37. 37.4 + 12 =
  38. 38.Ananya has 15 pencils and gets 4 pencils more. How many pencils does Ananya have now?
  39. 39.2 + ? = 4
  40. 40.There are 11 blue balls and 5 yellow balls. How many balls are there in all?

Answer key

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

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