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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 902 · 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.Isha has 9 marbles and gets 9 marbles more. How many marbles does Isha have now?
  2. 2.There are 4 blue flowers and 3 white flowers. How many flowers are there in all?
  3. 3.There are 11 green beads and 6 pink beads. How many beads are there in all?
  4. 4.? + 3 = 8
  5. 5.4 + 16 =
  6. 6.There are 4 green balloons and 6 blue balloons. How many balloons are there in all?
  7. 7.2 + ? = 5
  8. 8.11 + 4 =
  9. 9.4 + 12 =
  10. 10.6 + 1 + 5 =
  11. 11.There are 4 white kites and 6 blue kites. How many kites are there in all?
  12. 12.? + 13 = 15
  13. 13.? + 2 = 10
  14. 14.There are 10 red balls and 3 green balls. How many balls are there in all?
  15. 15.There are 11 blue kites and 6 green kites. How many kites are there in all?
  16. 16.4 + 9 =
  17. 17.Sneha has 8 crayons and gets 4 crayons more. How many crayons does Sneha have now?
  18. 18.8 + 8 + 2 =
  19. 19.4 + ? = 10
  20. 20.There are 12 yellow crayons and 7 red crayons. How many crayons are there in all?
  21. 21.Vivaan has 11 books and gets 1 book more. How many books does Vivaan have now?
  22. 22.2 + ? = 8
  23. 23.6 + 4 + 3 =
  24. 24.? + 16 = 17
  25. 25.Diya has 12 flowers and gets 7 flowers more. How many flowers does Diya have now?
  26. 26.? + 2 = 7
  27. 27.3 + ? = 7
  28. 28.Nisha has 8 bananas and gets 4 bananas more. How many bananas does Nisha have now?
  29. 29.There are 5 yellow beads and 14 white beads. How many beads are there in all?
  30. 30.There are 6 blue kites and 6 yellow kites. How many kites are there in all?
  31. 31.Aarav has 15 shells and gets 5 shells more. How many shells does Aarav have now?
  32. 32.There are 10 blue balls and 10 green balls. How many balls are there in all?
  33. 33.7 + 6 + 1 =
  34. 34.7 + 8 =
  35. 35.6 + 2 + 3 =
  36. 36.11 + 7 =
  37. 37.? + 14 = 18
  38. 38.There are 2 yellow flowers and 18 red flowers. How many flowers are there in all?
  39. 39.? + 5 = 10
  40. 40.16 + 1 =

Answer key

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

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