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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 602 · 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 10 yellow crayons and 2 pink crayons. How many crayons are there in all?
  2. 2.Arjun has 5 balloons and gets 13 balloons more. How many balloons does Arjun have now?
  3. 3.10 + 5 =
  4. 4.Kavya has 3 crayons and gets 12 crayons more. How many crayons does Kavya have now?
  5. 5.17 + 3 =
  6. 6.There are 7 red crayons and 9 green crayons. How many crayons are there in all?
  7. 7.5 + 5 + 3 =
  8. 8.Ishaan has 4 books and gets 9 books more. How many books does Ishaan have now?
  9. 9.17 + ? = 18
  10. 10.2 + 2 + 10 =
  11. 11.1 + ? = 4
  12. 12.Kabir has 6 mangoes and gets 5 mangoes more. How many mangoes does Kabir have now?
  13. 13.Pooja has 14 mangoes and gets 2 mangoes more. How many mangoes does Pooja have now?
  14. 14.? + 3 = 12
  15. 15.6 + 11 =
  16. 16.Kavya has 9 bananas and gets 9 bananas more. How many bananas does Kavya have now?
  17. 17.1 + 1 + 15 =
  18. 18.Riya has 9 marbles and gets 2 marbles more. How many marbles does Riya have now?
  19. 19.1 + 5 + 4 =
  20. 20.Diya has 10 mangoes and gets 5 mangoes more. How many mangoes does Diya have now?
  21. 21.17 + 1 =
  22. 22.Isha has 14 balloons and gets 1 balloon more. How many balloons does Isha have now?
  23. 23.6 + ? = 8
  24. 24.15 + 1 =
  25. 25.12 + ? = 15
  26. 26.13 + 2 =
  27. 27.3 + 1 =
  28. 28.4 + 5 + 5 =
  29. 29.There are 12 green balls and 3 red balls. How many balls are there in all?
  30. 30.Meera has 13 marbles and gets 1 marble more. How many marbles does Meera have now?
  31. 31.3 + 3 + 1 =
  32. 32.7 + 6 + 1 =
  33. 33.7 + 1 + 3 =
  34. 34.7 + 2 + 1 =
  35. 35.3 + 2 + 9 =
  36. 36.Saanvi has 4 flowers and gets 16 flowers more. How many flowers does Saanvi have now?
  37. 37.Aarav has 14 kites and gets 4 kites more. How many kites does Aarav have now?
  38. 38.2 + 2 + 8 =
  39. 39.6 + 5 + 2 =
  40. 40.There are 12 pink beads and 4 yellow beads. How many beads are there in all?

Answer key

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

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