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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 631 · 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 7 white beads and 2 green beads. How many beads are there in all?
  2. 2.8 + 1 =
  3. 3.There are 5 red balls and 10 pink balls. How many balls are there in all?
  4. 4.2 + 15 =
  5. 5.1 + 2 + 4 =
  6. 6.7 + ? = 20
  7. 7.There are 10 red balls and 3 green balls. How many balls are there in all?
  8. 8.Arjun has 10 balls and gets 10 balls more. How many balls does Arjun have now?
  9. 9.13 + 6 =
  10. 10.There are 6 red flowers and 14 green flowers. How many flowers are there in all?
  11. 11.Manav has 11 kites and gets 5 kites more. How many kites does Manav have now?
  12. 12.There are 10 red balls and 3 pink balls. How many balls are there in all?
  13. 13.15 + ? = 17
  14. 14.? + 6 = 13
  15. 15.8 + 10 =
  16. 16.14 + 2 =
  17. 17.There are 11 pink balls and 6 yellow balls. How many balls are there in all?
  18. 18.There are 8 green balloons and 11 white balloons. How many balloons are there in all?
  19. 19.? + 13 = 16
  20. 20.Kavya has 4 marbles and gets 11 marbles more. How many marbles does Kavya have now?
  21. 21.10 + 9 =
  22. 22.3 + 2 + 11 =
  23. 23.There are 7 blue flowers and 11 green flowers. How many flowers are there in all?
  24. 24.There are 5 white crayons and 7 blue crayons. How many crayons are there in all?
  25. 25.7 + 5 + 7 =
  26. 26.? + 12 = 16
  27. 27.8 + 2 + 8 =
  28. 28.Isha has 7 crayons and gets 4 crayons more. How many crayons does Isha have now?
  29. 29.Manav has 2 flowers and gets 18 flowers more. How many flowers does Manav have now?
  30. 30.8 + 8 + 1 =
  31. 31.10 + 7 =
  32. 32.2 + 7 + 5 =
  33. 33.16 + 2 =
  34. 34.There are 8 pink flowers and 12 yellow flowers. How many flowers are there in all?
  35. 35.8 + 6 =
  36. 36.3 + 9 =
  37. 37.11 + 7 =
  38. 38.Isha has 5 balloons and gets 13 balloons more. How many balloons does Isha have now?
  39. 39.Sneha has 10 bananas and gets 8 bananas more. How many bananas does Sneha have now?
  40. 40.There are 2 blue crayons and 2 red crayons. How many crayons are there in all?

Answer key

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

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