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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 81 · 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 + 6 =
  2. 2.Meera has 9 pencils and gets 8 pencils more. How many pencils does Meera have now?
  3. 3.19 + 1 =
  4. 4.15 + 2 =
  5. 5.There are 4 yellow balloons and 4 blue balloons. How many balloons are there in all?
  6. 6.1 + 3 + 4 =
  7. 7.7 + 12 =
  8. 8.Isha has 14 mangoes and gets 6 mangoes more. How many mangoes does Isha have now?
  9. 9.There are 8 blue beads and 9 green beads. How many beads are there in all?
  10. 10.There are 8 red crayons and 3 white crayons. How many crayons are there in all?
  11. 11.Saanvi has 5 pencils and gets 7 pencils more. How many pencils does Saanvi have now?
  12. 12.? + 3 = 4
  13. 13.7 + ? = 19
  14. 14.15 + 1 =
  15. 15.1 + 15 =
  16. 16.3 + ? = 4
  17. 17.Manav has 2 balloons and gets 1 balloon more. How many balloons does Manav have now?
  18. 18.Meera has 7 flowers and gets 11 flowers more. How many flowers does Meera have now?
  19. 19.8 + 4 =
  20. 20.? + 2 = 4
  21. 21.There are 6 white flowers and 12 green flowers. How many flowers are there in all?
  22. 22.4 + ? = 6
  23. 23.2 + 6 =
  24. 24.4 + 5 + 3 =
  25. 25.There are 12 blue balloons and 3 red balloons. How many balloons are there in all?
  26. 26.5 + 1 + 3 =
  27. 27.? + 5 = 18
  28. 28.There are 3 yellow beads and 4 green beads. How many beads are there in all?
  29. 29.Ananya has 2 bananas and gets 3 bananas more. How many bananas does Ananya have now?
  30. 30.9 + 5 =
  31. 31.2 + 2 + 12 =
  32. 32.There are 10 white kites and 7 pink kites. How many kites are there in all?
  33. 33.There are 10 red balloons and 8 green balloons. How many balloons are there in all?
  34. 34.5 + 6 =
  35. 35.There are 11 yellow balloons and 6 green balloons. How many balloons are there in all?
  36. 36.4 + 1 + 12 =
  37. 37.There are 3 yellow flowers and 8 white flowers. How many flowers are there in all?
  38. 38.16 + 2 =
  39. 39.Priya has 7 flowers and gets 13 flowers more. How many flowers does Priya have now?
  40. 40.13 + 7 =

Answer key

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

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