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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 985 · 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 + 4 =
  2. 2.? + 4 = 6
  3. 3.1 + 3 + 16 =
  4. 4.1 + 9 =
  5. 5.1 + 1 + 8 =
  6. 6.Ishaan has 7 crayons and gets 8 crayons more. How many crayons does Ishaan have now?
  7. 7.There are 2 pink beads and 14 red beads. How many beads are there in all?
  8. 8.12 + 7 =
  9. 9.17 + 1 =
  10. 10.Manav has 7 crayons and gets 13 crayons more. How many crayons does Manav have now?
  11. 11.18 + 1 =
  12. 12.7 + 4 =
  13. 13.13 + 5 =
  14. 14.7 + 3 =
  15. 15.Aditya has 5 marbles and gets 6 marbles more. How many marbles does Aditya have now?
  16. 16.4 + ? = 18
  17. 17.7 + ? = 19
  18. 18.3 + 10 =
  19. 19.There are 2 blue flowers and 5 pink flowers. How many flowers are there in all?
  20. 20.2 + 5 + 7 =
  21. 21.14 + 4 =
  22. 22.8 + 1 + 6 =
  23. 23.1 + 1 =
  24. 24.3 + 4 + 10 =
  25. 25.Kavya has 15 laddoos and gets 4 laddoos more. How many laddoos does Kavya have now?
  26. 26.There are 3 blue balloons and 5 yellow balloons. How many balloons are there in all?
  27. 27.Lakshmi has 3 laddoos and gets 17 laddoos more. How many laddoos does Lakshmi have now?
  28. 28.Zoya has 14 bananas and gets 2 bananas more. How many bananas does Zoya have now?
  29. 29.There are 10 red kites and 6 yellow kites. How many kites are there in all?
  30. 30.There are 9 green balloons and 7 yellow balloons. How many balloons are there in all?
  31. 31.6 + 2 + 10 =
  32. 32.6 + 2 + 1 =
  33. 33.11 + 1 =
  34. 34.19 + 1 =
  35. 35.There are 4 blue balloons and 15 green balloons. How many balloons are there in all?
  36. 36.3 + ? = 9
  37. 37.Gurpreet has 9 laddoos and gets 7 laddoos more. How many laddoos does Gurpreet have now?
  38. 38.14 + 1 =
  39. 39.? + 5 = 13
  40. 40.5 + 6 =

Answer key

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

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