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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 269 · 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. 1.3 + 5 + 11 =
  2. 2.1 + 18 =
  3. 3.17 + 3 =
  4. 4.Manav has 9 crayons and gets 3 crayons more. How many crayons does Manav have now?
  5. 5.Pooja has 12 balloons and gets 6 balloons more. How many balloons does Pooja have now?
  6. 6.11 + 2 =
  7. 7.? + 2 = 11
  8. 8.5 + 8 =
  9. 9.There are 6 yellow crayons and 7 blue crayons. How many crayons are there in all?
  10. 10.Saanvi has 13 laddoos and gets 5 laddoos more. How many laddoos does Saanvi have now?
  11. 11.7 + 2 + 4 =
  12. 12.17 + 2 =
  13. 13.3 + 6 + 8 =
  14. 14.There are 2 white kites and 2 pink kites. How many kites are there in all?
  15. 15.? + 8 = 14
  16. 16.There are 8 red kites and 6 white kites. How many kites are there in all?
  17. 17.12 + ? = 15
  18. 18.Gurpreet has 10 balls and gets 10 balls more. How many balls does Gurpreet have now?
  19. 19.1 + ? = 5
  20. 20.18 + 1 =
  21. 21.6 + 7 =
  22. 22.Lakshmi has 3 crayons and gets 8 crayons more. How many crayons does Lakshmi have now?
  23. 23.There are 12 pink balloons and 4 green balloons. How many balloons are there in all?
  24. 24.5 + 5 =
  25. 25.1 + 2 + 2 =
  26. 26.There are 8 blue crayons and 9 red crayons. How many crayons are there in all?
  27. 27.? + 3 = 4
  28. 28.1 + 3 =
  29. 29.3 + 2 + 7 =
  30. 30.There are 3 green flowers and 13 red flowers. How many flowers are there in all?
  31. 31.1 + 2 =
  32. 32.? + 2 = 3
  33. 33.There are 9 red flowers and 5 blue flowers. How many flowers are there in all?
  34. 34.3 + ? = 7
  35. 35.Ishaan has 15 kites and gets 4 kites more. How many kites does Ishaan have now?
  36. 36.? + 7 = 8
  37. 37.1 + 6 + 13 =
  38. 38.Dev has 2 shells and gets 9 shells more. How many shells does Dev have now?
  39. 39.Rohan has 2 flowers and gets 11 flowers more. How many flowers does Rohan have now?
  40. 40.7 + 8 =

Answer key

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

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