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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 198 · 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 12 pink beads and 8 white beads. How many beads are there in all?
  2. 2.There are 9 green kites and 8 blue kites. How many kites are there in all?
  3. 3.11 + 6 =
  4. 4.? + 6 = 13
  5. 5.6 + 1 + 10 =
  6. 6.5 + 7 + 8 =
  7. 7.There are 5 yellow balloons and 2 red balloons. How many balloons are there in all?
  8. 8.7 + 11 =
  9. 9.16 + 1 =
  10. 10.? + 6 = 15
  11. 11.There are 10 yellow kites and 6 pink kites. How many kites are there in all?
  12. 12.There are 4 yellow kites and 9 pink kites. How many kites are there in all?
  13. 13.There are 5 red balls and 10 white balls. How many balls are there in all?
  14. 14.There are 7 red balls and 5 yellow balls. How many balls are there in all?
  15. 15.There are 5 green kites and 13 white kites. How many kites are there in all?
  16. 16.1 + 4 + 13 =
  17. 17.Zoya has 2 kites and gets 15 kites more. How many kites does Zoya have now?
  18. 18.Meera has 2 balloons and gets 15 balloons more. How many balloons does Meera have now?
  19. 19.Ananya has 2 balloons and gets 6 balloons more. How many balloons does Ananya have now?
  20. 20.There are 11 yellow balloons and 3 pink balloons. How many balloons are there in all?
  21. 21.3 + 3 + 14 =
  22. 22.There are 4 white beads and 6 pink beads. How many beads are there in all?
  23. 23.4 + 14 =
  24. 24.8 + 5 + 2 =
  25. 25.There are 5 red balls and 3 white balls. How many balls are there in all?
  26. 26.5 + 3 + 3 =
  27. 27.3 + 1 + 12 =
  28. 28.? + 1 = 20
  29. 29.11 + 2 =
  30. 30.19 + 1 =
  31. 31.2 + ? = 5
  32. 32.? + 1 = 8
  33. 33.8 + 2 + 1 =
  34. 34.5 + 3 =
  35. 35.5 + ? = 18
  36. 36.15 + 1 =
  37. 37.? + 1 = 3
  38. 38.8 + 1 =
  39. 39.There are 9 yellow flowers and 6 pink flowers. How many flowers are there in all?
  40. 40.6 + 2 + 2 =

Answer key

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

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