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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 727 · 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 + 8 + 6 =
  2. 2.? + 2 = 5
  3. 3.There are 10 red balloons and 8 blue balloons. How many balloons are there in all?
  4. 4.Vivaan has 5 flowers and gets 1 flower more. How many flowers does Vivaan have now?
  5. 5.There are 2 yellow balls and 16 pink balls. How many balls are there in all?
  6. 6.There are 4 red flowers and 8 pink flowers. How many flowers are there in all?
  7. 7.Dev has 5 bananas and gets 11 bananas more. How many bananas does Dev have now?
  8. 8.Kabir has 13 marbles and gets 2 marbles more. How many marbles does Kabir have now?
  9. 9.8 + 12 =
  10. 10.1 + 3 + 11 =
  11. 11.There are 6 pink flowers and 9 green flowers. How many flowers are there in all?
  12. 12.3 + ? = 5
  13. 13.Kabir has 5 crayons and gets 5 crayons more. How many crayons does Kabir have now?
  14. 14.2 + 6 + 7 =
  15. 15.There are 4 green crayons and 4 white crayons. How many crayons are there in all?
  16. 16.2 + 18 =
  17. 17.Kabir has 5 marbles and gets 7 marbles more. How many marbles does Kabir have now?
  18. 18.2 + 5 + 3 =
  19. 19.8 + 11 =
  20. 20.13 + ? = 19
  21. 21.12 + 7 =
  22. 22.Rahul has 10 balloons and gets 9 balloons more. How many balloons does Rahul have now?
  23. 23.6 + 11 =
  24. 24.9 + 8 =
  25. 25.10 + 3 =
  26. 26.2 + 15 =
  27. 27.There are 10 blue balls and 10 green balls. How many balls are there in all?
  28. 28.Lakshmi has 3 flowers and gets 4 flowers more. How many flowers does Lakshmi have now?
  29. 29.Dev has 7 kites and gets 13 kites more. How many kites does Dev have now?
  30. 30.There are 9 yellow balls and 11 red balls. How many balls are there in all?
  31. 31.Rohan has 13 balloons and gets 2 balloons more. How many balloons does Rohan have now?
  32. 32.4 + 3 + 4 =
  33. 33.There are 8 red crayons and 12 yellow crayons. How many crayons are there in all?
  34. 34.Sneha has 13 mangoes and gets 5 mangoes more. How many mangoes does Sneha have now?
  35. 35.There are 10 white balloons and 7 green balloons. How many balloons are there in all?
  36. 36.3 + 16 =
  37. 37.4 + 5 + 4 =
  38. 38.There are 3 yellow balls and 8 pink balls. How many balls are there in all?
  39. 39.There are 5 pink flowers and 3 blue flowers. How many flowers are there in all?
  40. 40.There are 3 pink beads and 2 blue beads. How many beads are there in all?

Answer key

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

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