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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 128 · 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.There are 10 green crayons and 9 red crayons. How many crayons are there in all?
  2. 2.Diya has 4 books and gets 4 books more. How many books does Diya have now?
  3. 3.1 + 3 + 5 =
  4. 4.Meera has 10 balls and gets 7 balls more. How many balls does Meera have now?
  5. 5.15 + 4 =
  6. 6.Diya has 10 kites and gets 1 kite more. How many kites does Diya have now?
  7. 7.6 + 4 + 3 =
  8. 8.There are 10 white flowers and 9 red flowers. How many flowers are there in all?
  9. 9.? + 1 = 3
  10. 10.6 + 7 + 3 =
  11. 11.4 + 8 =
  12. 12.Gurpreet has 6 balls and gets 14 balls more. How many balls does Gurpreet have now?
  13. 13.There are 11 pink kites and 8 white kites. How many kites are there in all?
  14. 14.8 + 11 =
  15. 15.15 + ? = 17
  16. 16.Kabir has 4 shells and gets 10 shells more. How many shells does Kabir have now?
  17. 17.Saanvi has 15 books and gets 2 books more. How many books does Saanvi have now?
  18. 18.There are 4 white beads and 10 green beads. How many beads are there in all?
  19. 19.17 + 3 =
  20. 20.7 + 6 + 5 =
  21. 21.Rahul has 2 bananas and gets 6 bananas more. How many bananas does Rahul have now?
  22. 22.14 + 3 =
  23. 23.There are 10 yellow balloons and 7 white balloons. How many balloons are there in all?
  24. 24.5 + 5 + 6 =
  25. 25.8 + 3 + 1 =
  26. 26.There are 12 red balloons and 3 pink balloons. How many balloons are there in all?
  27. 27.7 + 2 + 4 =
  28. 28.Tara has 4 mangoes and gets 16 mangoes more. How many mangoes does Tara have now?
  29. 29.17 + 1 =
  30. 30.There are 12 red kites and 6 blue kites. How many kites are there in all?
  31. 31.6 + 4 =
  32. 32.10 + ? = 13
  33. 33.There are 5 red beads and 9 pink beads. How many beads are there in all?
  34. 34.2 + 2 + 10 =
  35. 35.16 + 4 =
  36. 36.1 + ? = 5
  37. 37.6 + 2 =
  38. 38.3 + 4 + 1 =
  39. 39.Priya has 4 balloons and gets 13 balloons more. How many balloons does Priya have now?
  40. 40.Nisha has 3 shells and gets 16 shells more. How many shells does Nisha have now?

Answer key

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

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