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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 182 · 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. 1.5 + 11 =
  2. 2.4 + 1 + 11 =
  3. 3.11 + 4 =
  4. 4.? + 2 = 5
  5. 5.? + 7 = 8
  6. 6.There are 6 white balls and 14 yellow balls. How many balls are there in all?
  7. 7.There are 5 red flowers and 5 pink flowers. How many flowers are there in all?
  8. 8.2 + 8 =
  9. 9.1 + ? = 9
  10. 10.Nisha has 13 pencils and gets 4 pencils more. How many pencils does Nisha have now?
  11. 11.7 + 1 + 5 =
  12. 12.There are 3 red crayons and 5 blue crayons. How many crayons are there in all?
  13. 13.Gurpreet has 13 pencils and gets 3 pencils more. How many pencils does Gurpreet have now?
  14. 14.Kavya has 7 balloons and gets 9 balloons more. How many balloons does Kavya have now?
  15. 15.There are 12 yellow beads and 2 blue beads. How many beads are there in all?
  16. 16.12 + ? = 13
  17. 17.19 + 1 =
  18. 18.Ananya has 3 balls and gets 4 balls more. How many balls does Ananya have now?
  19. 19.18 + 1 =
  20. 20.12 + 3 =
  21. 21.? + 1 = 13
  22. 22.8 + 2 + 1 =
  23. 23.15 + 1 =
  24. 24.1 + 1 =
  25. 25.5 + 5 + 2 =
  26. 26.16 + 4 =
  27. 27.4 + ? = 7
  28. 28.8 + 5 + 5 =
  29. 29.There are 11 yellow flowers and 4 pink flowers. How many flowers are there in all?
  30. 30.There are 4 pink beads and 5 white beads. How many beads are there in all?
  31. 31.Sneha has 9 pencils and gets 2 pencils more. How many pencils does Sneha have now?
  32. 32.5 + ? = 7
  33. 33.? + 8 = 16
  34. 34.Riya has 11 balls and gets 8 balls more. How many balls does Riya have now?
  35. 35.10 + 8 =
  36. 36.5 + 4 =
  37. 37.There are 10 white kites and 4 yellow kites. How many kites are there in all?
  38. 38.There are 2 blue balloons and 14 yellow balloons. How many balloons are there in all?
  39. 39.There are 12 green crayons and 2 white crayons. How many crayons are there in all?
  40. 40.? + 11 = 13

Answer key

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

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