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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 209 · 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 6 yellow balloons and 3 pink balloons. How many balloons are there in all?
  2. 2.Manav has 15 marbles and gets 4 marbles more. How many marbles does Manav have now?
  3. 3.There are 9 pink crayons and 4 white crayons. How many crayons are there in all?
  4. 4.Priya has 9 pencils and gets 6 pencils more. How many pencils does Priya have now?
  5. 5.? + 1 = 3
  6. 6.7 + 3 + 7 =
  7. 7.4 + 9 =
  8. 8.There are 2 red balloons and 14 green balloons. How many balloons are there in all?
  9. 9.1 + 6 + 6 =
  10. 10.19 + 1 =
  11. 11.Rohan has 15 balloons and gets 4 balloons more. How many balloons does Rohan have now?
  12. 12.Arjun has 15 balls and gets 4 balls more. How many balls does Arjun have now?
  13. 13.17 + 2 =
  14. 14.5 + 6 + 1 =
  15. 15.2 + 5 + 13 =
  16. 16.There are 6 green balloons and 14 yellow balloons. How many balloons are there in all?
  17. 17.10 + 7 =
  18. 18.There are 2 pink kites and 13 red kites. How many kites are there in all?
  19. 19.3 + ? = 6
  20. 20.There are 2 green balloons and 4 white balloons. How many balloons are there in all?
  21. 21.Diya has 8 mangoes and gets 7 mangoes more. How many mangoes does Diya have now?
  22. 22.Farhan has 3 marbles and gets 2 marbles more. How many marbles does Farhan have now?
  23. 23.7 + 6 + 2 =
  24. 24.Ishaan has 6 kites and gets 5 kites more. How many kites does Ishaan have now?
  25. 25.There are 4 red crayons and 13 pink crayons. How many crayons are there in all?
  26. 26.18 + 2 =
  27. 27.There are 3 pink balloons and 11 white balloons. How many balloons are there in all?
  28. 28.3 + 14 =
  29. 29.8 + ? = 12
  30. 30.Nisha has 13 kites and gets 6 kites more. How many kites does Nisha have now?
  31. 31.6 + 3 + 6 =
  32. 32.2 + 16 =
  33. 33.? + 13 = 15
  34. 34.2 + ? = 5
  35. 35.11 + ? = 18
  36. 36.16 + 3 =
  37. 37.There are 4 red crayons and 7 pink crayons. How many crayons are there in all?
  38. 38.There are 7 red flowers and 6 pink flowers. How many flowers are there in all?
  39. 39.12 + 8 =
  40. 40.There are 12 red flowers and 3 pink flowers. How many flowers are there in all?

Answer key

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

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