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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 560 · 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.? + 5 = 7
  2. 2.? + 16 = 19
  3. 3.There are 4 blue flowers and 9 pink flowers. How many flowers are there in all?
  4. 4.17 + 2 =
  5. 5.There are 6 red balloons and 4 yellow balloons. How many balloons are there in all?
  6. 6.19 + 1 =
  7. 7.There are 8 red beads and 2 white beads. How many beads are there in all?
  8. 8.Manav has 12 kites and gets 2 kites more. How many kites does Manav have now?
  9. 9.Vivaan has 8 crayons and gets 3 crayons more. How many crayons does Vivaan have now?
  10. 10.There are 11 red crayons and 8 green crayons. How many crayons are there in all?
  11. 11.9 + 3 =
  12. 12.16 + 3 =
  13. 13.7 + ? = 13
  14. 14.4 + ? = 7
  15. 15.4 + ? = 8
  16. 16.Saanvi has 13 balls and gets 5 balls more. How many balls does Saanvi have now?
  17. 17.16 + 2 =
  18. 18.5 + ? = 7
  19. 19.2 + ? = 13
  20. 20.There are 11 blue crayons and 8 pink crayons. How many crayons are there in all?
  21. 21.3 + 1 + 4 =
  22. 22.Gurpreet has 11 kites and gets 1 kite more. How many kites does Gurpreet have now?
  23. 23.1 + 18 =
  24. 24.1 + ? = 4
  25. 25.? + 1 = 9
  26. 26.12 + 2 =
  27. 27.Lakshmi has 10 flowers and gets 1 flower more. How many flowers does Lakshmi have now?
  28. 28.18 + 1 =
  29. 29.13 + 4 =
  30. 30.There are 6 red balloons and 12 blue balloons. How many balloons are there in all?
  31. 31.2 + 10 =
  32. 32.14 + 2 =
  33. 33.6 + 5 + 8 =
  34. 34.3 + ? = 10
  35. 35.Riya has 13 balls and gets 4 balls more. How many balls does Riya have now?
  36. 36.18 + 2 =
  37. 37.3 + 4 + 7 =
  38. 38.13 + 2 =
  39. 39.Rahul has 8 balls and gets 12 balls more. How many balls does Rahul have now?
  40. 40.? + 4 = 19

Answer key

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

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