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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 939 · 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. 1.2 + 6 + 7 =
  2. 2.8 + ? = 13
  3. 3.Rahul has 9 balls and gets 9 balls more. How many balls does Rahul have now?
  4. 4.Arjun has 5 marbles and gets 4 marbles more. How many marbles does Arjun have now?
  5. 5.There are 6 green flowers and 3 blue flowers. How many flowers are there in all?
  6. 6.There are 9 white flowers and 7 red flowers. How many flowers are there in all?
  7. 7.19 + 1 =
  8. 8.3 + 2 + 5 =
  9. 9.? + 7 = 19
  10. 10.Meera has 3 crayons and gets 17 crayons more. How many crayons does Meera have now?
  11. 11.There are 2 blue beads and 3 white beads. How many beads are there in all?
  12. 12.There are 2 white kites and 3 yellow kites. How many kites are there in all?
  13. 13.5 + ? = 18
  14. 14.1 + ? = 9
  15. 15.Manav has 11 books and gets 1 book more. How many books does Manav have now?
  16. 16.Gurpreet has 3 shells and gets 16 shells more. How many shells does Gurpreet have now?
  17. 17.2 + 5 + 9 =
  18. 18.There are 2 white balls and 6 yellow balls. How many balls are there in all?
  19. 19.? + 5 = 6
  20. 20.There are 3 blue kites and 13 white kites. How many kites are there in all?
  21. 21.4 + 3 + 1 =
  22. 22.18 + 2 =
  23. 23.There are 4 blue balloons and 12 white balloons. How many balloons are there in all?
  24. 24.There are 7 blue kites and 5 yellow kites. How many kites are there in all?
  25. 25.There are 4 red flowers and 3 pink flowers. How many flowers are there in all?
  26. 26.17 + 2 =
  27. 27.There are 4 white balloons and 11 yellow balloons. How many balloons are there in all?
  28. 28.Aditya has 13 books and gets 7 books more. How many books does Aditya have now?
  29. 29.16 + 1 =
  30. 30.There are 2 pink beads and 10 blue beads. How many beads are there in all?
  31. 31.Ishaan has 4 balloons and gets 10 balloons more. How many balloons does Ishaan have now?
  32. 32.There are 6 pink balloons and 2 blue balloons. How many balloons are there in all?
  33. 33.1 + 6 + 5 =
  34. 34.? + 11 = 12
  35. 35.6 + 13 =
  36. 36.Vivaan has 4 marbles and gets 8 marbles more. How many marbles does Vivaan have now?
  37. 37.Nisha has 7 shells and gets 11 shells more. How many shells does Nisha have now?
  38. 38.15 + 2 =
  39. 39.10 + ? = 20
  40. 40.Priya has 2 marbles and gets 14 marbles more. How many marbles does Priya have now?

Answer key

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

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