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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 885 · 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 9 blue balloons. How many balloons are there in all?
  2. 2.Priya has 10 flowers and gets 2 flowers more. How many flowers does Priya have now?
  3. 3.10 + 8 =
  4. 4.? + 2 = 3
  5. 5.15 + 3 =
  6. 6.6 + 10 =
  7. 7.There are 7 red beads and 2 pink beads. How many beads are there in all?
  8. 8.8 + 5 + 2 =
  9. 9.Lakshmi has 9 bananas and gets 8 bananas more. How many bananas does Lakshmi have now?
  10. 10.5 + 12 =
  11. 11.There are 11 yellow flowers and 8 pink flowers. How many flowers are there in all?
  12. 12.7 + ? = 18
  13. 13.4 + ? = 17
  14. 14.There are 3 pink balloons and 6 yellow balloons. How many balloons are there in all?
  15. 15.Joseph has 7 books and gets 3 books more. How many books does Joseph have now?
  16. 16.There are 10 yellow flowers and 3 blue flowers. How many flowers are there in all?
  17. 17.There are 10 yellow flowers and 7 red flowers. How many flowers are there in all?
  18. 18.2 + 1 + 13 =
  19. 19.Aarav has 8 laddoos and gets 12 laddoos more. How many laddoos does Aarav have now?
  20. 20.7 + 1 + 3 =
  21. 21.1 + ? = 3
  22. 22.Riya has 12 crayons and gets 8 crayons more. How many crayons does Riya have now?
  23. 23.There are 2 pink balloons and 6 red balloons. How many balloons are there in all?
  24. 24.? + 3 = 12
  25. 25.3 + 7 + 1 =
  26. 26.Kavya has 10 balls and gets 3 balls more. How many balls does Kavya have now?
  27. 27.7 + 6 + 1 =
  28. 28.Dev has 11 crayons and gets 2 crayons more. How many crayons does Dev have now?
  29. 29.There are 9 white beads and 2 green beads. How many beads are there in all?
  30. 30.11 + 2 =
  31. 31.There are 2 red crayons and 3 blue crayons. How many crayons are there in all?
  32. 32.12 + ? = 13
  33. 33.There are 12 white balls and 7 yellow balls. How many balls are there in all?
  34. 34.2 + 1 =
  35. 35.There are 5 pink balls and 11 yellow balls. How many balls are there in all?
  36. 36.Kavya has 9 bananas and gets 4 bananas more. How many bananas does Kavya have now?
  37. 37.Isha has 5 mangoes and gets 6 mangoes more. How many mangoes does Isha have now?
  38. 38.13 + 1 =
  39. 39.1 + 8 + 1 =
  40. 40.12 + 6 =

Answer key

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

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