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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 316 · 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. 1.1 + 7 =
  2. 2.Zoya has 11 mangoes and gets 3 mangoes more. How many mangoes does Zoya have now?
  3. 3.2 + 2 + 5 =
  4. 4.7 + 3 + 5 =
  5. 5.15 + 1 =
  6. 6.Farhan has 2 bananas and gets 11 bananas more. How many bananas does Farhan have now?
  7. 7.There are 3 green flowers and 7 yellow flowers. How many flowers are there in all?
  8. 8.1 + 2 + 10 =
  9. 9.Nisha has 8 crayons and gets 4 crayons more. How many crayons does Nisha have now?
  10. 10.Nisha has 10 flowers and gets 8 flowers more. How many flowers does Nisha have now?
  11. 11.There are 3 red balls and 4 pink balls. How many balls are there in all?
  12. 12.13 + 2 =
  13. 13.There are 9 white balloons and 5 blue balloons. How many balloons are there in all?
  14. 14.Manav has 11 balloons and gets 3 balloons more. How many balloons does Manav have now?
  15. 15.? + 4 = 8
  16. 16.Gurpreet has 7 books and gets 12 books more. How many books does Gurpreet have now?
  17. 17.There are 2 red beads and 12 yellow beads. How many beads are there in all?
  18. 18.7 + 6 + 5 =
  19. 19.7 + 2 + 6 =
  20. 20.2 + 5 + 5 =
  21. 21.4 + 3 + 5 =
  22. 22.There are 2 red flowers and 10 green flowers. How many flowers are there in all?
  23. 23.8 + 5 =
  24. 24.1 + 12 =
  25. 25.Lakshmi has 12 balls and gets 2 balls more. How many balls does Lakshmi have now?
  26. 26.? + 7 = 12
  27. 27.There are 12 white flowers and 6 green flowers. How many flowers are there in all?
  28. 28.? + 3 = 7
  29. 29.There are 11 white flowers and 4 red flowers. How many flowers are there in all?
  30. 30.13 + 7 =
  31. 31.Manav has 9 books and gets 10 books more. How many books does Manav have now?
  32. 32.5 + 3 + 2 =
  33. 33.? + 7 = 20
  34. 34.Joseph has 15 balloons and gets 4 balloons more. How many balloons does Joseph have now?
  35. 35.Aarav has 15 bananas and gets 3 bananas more. How many bananas does Aarav have now?
  36. 36.Meera has 4 balloons and gets 3 balloons more. How many balloons does Meera have now?
  37. 37.There are 4 pink crayons and 7 red crayons. How many crayons are there in all?
  38. 38.7 + 8 + 2 =
  39. 39.Isha has 4 balls and gets 5 balls more. How many balls does Isha have now?
  40. 40.5 + 10 =

Answer key

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

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