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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 485 · 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 yellow kites and 8 blue kites. How many kites are there in all?
  2. 2.There are 5 pink beads and 6 red beads. How many beads are there in all?
  3. 3.8 + 5 + 2 =
  4. 4.7 + 2 + 5 =
  5. 5.1 + 14 =
  6. 6.2 + 2 + 10 =
  7. 7.There are 3 white beads and 4 pink beads. How many beads are there in all?
  8. 8.6 + 2 + 7 =
  9. 9.9 + 5 =
  10. 10.7 + ? = 8
  11. 11.1 + 5 + 3 =
  12. 12.There are 12 yellow beads and 3 red beads. How many beads are there in all?
  13. 13.3 + 10 =
  14. 14.Meera has 10 crayons and gets 10 crayons more. How many crayons does Meera have now?
  15. 15.19 + 1 =
  16. 16.Gurpreet has 6 shells and gets 10 shells more. How many shells does Gurpreet have now?
  17. 17.17 + 1 =
  18. 18.6 + 2 + 9 =
  19. 19.Dev has 5 mangoes and gets 7 mangoes more. How many mangoes does Dev have now?
  20. 20.There are 10 pink beads and 6 red beads. How many beads are there in all?
  21. 21.Arjun has 9 marbles and gets 11 marbles more. How many marbles does Arjun have now?
  22. 22.There are 7 pink balloons and 2 green balloons. How many balloons are there in all?
  23. 23.Isha has 2 crayons and gets 4 crayons more. How many crayons does Isha have now?
  24. 24.1 + ? = 4
  25. 25.There are 11 blue balloons and 2 green balloons. How many balloons are there in all?
  26. 26.Ananya has 14 flowers and gets 4 flowers more. How many flowers does Ananya have now?
  27. 27.There are 4 pink beads and 3 red beads. How many beads are there in all?
  28. 28.9 + ? = 10
  29. 29.There are 10 red crayons and 5 green crayons. How many crayons are there in all?
  30. 30.There are 12 blue balloons and 8 red balloons. How many balloons are there in all?
  31. 31.There are 9 yellow kites and 3 red kites. How many kites are there in all?
  32. 32.3 + 4 + 10 =
  33. 33.3 + 3 + 6 =
  34. 34.3 + 9 =
  35. 35.4 + 6 + 10 =
  36. 36.2 + ? = 11
  37. 37.Aditya has 10 mangoes and gets 2 mangoes more. How many mangoes does Aditya have now?
  38. 38.There are 9 red kites and 5 white kites. How many kites are there in all?
  39. 39.There are 6 green beads and 2 blue beads. How many beads are there in all?
  40. 40.There are 4 blue balloons and 4 white balloons. How many balloons are there in all?

Answer key

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

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