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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 628 · 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.Arjun has 2 bananas and gets 1 banana more. How many bananas does Arjun have now?
  2. 2.3 + 2 =
  3. 3.Isha has 4 marbles and gets 11 marbles more. How many marbles does Isha have now?
  4. 4.1 + ? = 3
  5. 5.6 + ? = 8
  6. 6.? + 9 = 13
  7. 7.? + 2 = 3
  8. 8.Isha has 14 books and gets 3 books more. How many books does Isha have now?
  9. 9.There are 4 blue flowers and 4 pink flowers. How many flowers are there in all?
  10. 10.2 + 8 + 1 =
  11. 11.? + 4 = 12
  12. 12.4 + 3 + 3 =
  13. 13.7 + 7 + 2 =
  14. 14.? + 5 = 6
  15. 15.There are 12 green crayons and 6 pink crayons. How many crayons are there in all?
  16. 16.5 + ? = 14
  17. 17.? + 1 = 6
  18. 18.1 + 2 + 8 =
  19. 19.19 + 1 =
  20. 20.2 + 18 =
  21. 21.7 + 7 + 5 =
  22. 22.9 + ? = 15
  23. 23.5 + 1 + 14 =
  24. 24.There are 10 green flowers and 5 blue flowers. How many flowers are there in all?
  25. 25.2 + 17 =
  26. 26.Meera has 9 balls and gets 9 balls more. How many balls does Meera have now?
  27. 27.2 + ? = 13
  28. 28.2 + 2 + 13 =
  29. 29.? + 4 = 8
  30. 30.6 + 1 + 5 =
  31. 31.There are 4 red flowers and 3 white flowers. How many flowers are there in all?
  32. 32.6 + 1 =
  33. 33.3 + 8 + 6 =
  34. 34.3 + 4 + 13 =
  35. 35.? + 18 = 19
  36. 36.8 + ? = 11
  37. 37.There are 12 red balloons and 5 pink balloons. How many balloons are there in all?
  38. 38.? + 5 = 8
  39. 39.5 + 10 =
  40. 40.Vivaan has 4 pencils and gets 14 pencils more. How many pencils does Vivaan have now?

Answer key

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

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