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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 260 · 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 + 3 + 1 =
  2. 2.Zoya has 7 balls and gets 2 balls more. How many balls does Zoya have now?
  3. 3.17 + 3 =
  4. 4.2 + 6 + 9 =
  5. 5.5 + 2 =
  6. 6.2 + 2 + 5 =
  7. 7.? + 11 = 12
  8. 8.Manav has 4 balloons and gets 8 balloons more. How many balloons does Manav have now?
  9. 9.Manav has 10 kites and gets 5 kites more. How many kites does Manav have now?
  10. 10.There are 6 green flowers and 9 red flowers. How many flowers are there in all?
  11. 11.8 + ? = 17
  12. 12.? + 5 = 16
  13. 13.14 + 6 =
  14. 14.1 + 6 + 2 =
  15. 15.3 + 6 + 2 =
  16. 16.8 + 3 + 4 =
  17. 17.7 + 7 + 1 =
  18. 18.14 + ? = 19
  19. 19.Manav has 15 laddoos and gets 4 laddoos more. How many laddoos does Manav have now?
  20. 20.There are 5 pink flowers and 9 yellow flowers. How many flowers are there in all?
  21. 21.There are 2 white balloons and 6 blue balloons. How many balloons are there in all?
  22. 22.Saanvi has 5 mangoes and gets 9 mangoes more. How many mangoes does Saanvi have now?
  23. 23.There are 5 pink balls and 2 white balls. How many balls are there in all?
  24. 24.8 + 1 + 1 =
  25. 25.? + 9 = 14
  26. 26.Karan has 7 kites and gets 9 kites more. How many kites does Karan have now?
  27. 27.7 + ? = 8
  28. 28.2 + 6 + 7 =
  29. 29.? + 4 = 14
  30. 30.There are 10 white crayons and 7 green crayons. How many crayons are there in all?
  31. 31.? + 1 = 10
  32. 32.2 + 8 + 9 =
  33. 33.? + 4 = 16
  34. 34.5 + 10 =
  35. 35.? + 3 = 9
  36. 36.5 + 4 + 3 =
  37. 37.2 + 1 =
  38. 38.? + 10 = 20
  39. 39.2 + ? = 15
  40. 40.13 + 3 =

Answer key

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

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