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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 767 · 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 5 yellow balloons and 14 blue balloons. How many balloons are there in all?
  2. 2.Meera has 10 crayons and gets 9 crayons more. How many crayons does Meera have now?
  3. 3.There are 6 red crayons and 2 green crayons. How many crayons are there in all?
  4. 4.Meera has 5 flowers and gets 8 flowers more. How many flowers does Meera have now?
  5. 5.There are 8 red kites and 4 green kites. How many kites are there in all?
  6. 6.7 + 7 + 5 =
  7. 7.10 + ? = 11
  8. 8.1 + ? = 3
  9. 9.Arjun has 12 pencils and gets 3 pencils more. How many pencils does Arjun have now?
  10. 10.4 + ? = 9
  11. 11.There are 3 white beads and 8 red beads. How many beads are there in all?
  12. 12.4 + 3 + 12 =
  13. 13.5 + 4 =
  14. 14.There are 11 pink crayons and 3 blue crayons. How many crayons are there in all?
  15. 15.? + 10 = 20
  16. 16.Priya has 2 balloons and gets 4 balloons more. How many balloons does Priya have now?
  17. 17.5 + 3 + 2 =
  18. 18.6 + 2 + 4 =
  19. 19.There are 9 pink balloons and 6 white balloons. How many balloons are there in all?
  20. 20.14 + 1 =
  21. 21.There are 4 blue crayons and 15 yellow crayons. How many crayons are there in all?
  22. 22.2 + 2 + 15 =
  23. 23.Pooja has 7 flowers and gets 7 flowers more. How many flowers does Pooja have now?
  24. 24.3 + 7 + 3 =
  25. 25.8 + 6 =
  26. 26.? + 5 = 6
  27. 27.Nisha has 2 pencils and gets 14 pencils more. How many pencils does Nisha have now?
  28. 28.1 + ? = 16
  29. 29.6 + 3 =
  30. 30.Kabir has 11 mangoes and gets 2 mangoes more. How many mangoes does Kabir have now?
  31. 31.Kavya has 5 marbles and gets 3 marbles more. How many marbles does Kavya have now?
  32. 32.16 + 1 =
  33. 33.5 + 5 + 7 =
  34. 34.? + 3 = 4
  35. 35.There are 6 blue beads and 13 pink beads. How many beads are there in all?
  36. 36.Ishaan has 13 crayons and gets 5 crayons more. How many crayons does Ishaan have now?
  37. 37.8 + 5 =
  38. 38.6 + 1 =
  39. 39.Aarav has 10 pencils and gets 2 pencils more. How many pencils does Aarav have now?
  40. 40.5 + 5 + 8 =

Answer key

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

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