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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 155 · 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. 1.6 + 3 =
  2. 2.2 + 5 + 1 =
  3. 3.10 + 7 =
  4. 4.5 + ? = 9
  5. 5.Ishaan has 2 pencils and gets 4 pencils more. How many pencils does Ishaan have now?
  6. 6.9 + 8 =
  7. 7.Arjun has 3 flowers and gets 5 flowers more. How many flowers does Arjun have now?
  8. 8.5 + 8 =
  9. 9.6 + 7 + 5 =
  10. 10.There are 7 white flowers and 13 red flowers. How many flowers are there in all?
  11. 11.There are 6 blue kites and 13 green kites. How many kites are there in all?
  12. 12.? + 2 = 14
  13. 13.6 + 7 + 7 =
  14. 14.14 + 4 =
  15. 15.? + 10 = 12
  16. 16.There are 8 red crayons and 4 white crayons. How many crayons are there in all?
  17. 17.5 + 2 =
  18. 18.There are 3 white beads and 9 yellow beads. How many beads are there in all?
  19. 19.9 + 6 =
  20. 20.Diya has 13 pencils and gets 1 pencil more. How many pencils does Diya have now?
  21. 21.3 + ? = 7
  22. 22.Riya has 6 crayons and gets 7 crayons more. How many crayons does Riya have now?
  23. 23.13 + 3 =
  24. 24.6 + 4 + 2 =
  25. 25.9 + ? = 16
  26. 26.2 + ? = 3
  27. 27.5 + ? = 17
  28. 28.Meera has 5 kites and gets 10 kites more. How many kites does Meera have now?
  29. 29.Isha has 12 crayons and gets 7 crayons more. How many crayons does Isha have now?
  30. 30.7 + 2 + 6 =
  31. 31.1 + ? = 11
  32. 32.8 + 9 =
  33. 33.4 + 6 =
  34. 34.14 + 2 =
  35. 35.Zoya has 8 bananas and gets 9 bananas more. How many bananas does Zoya have now?
  36. 36.There are 7 yellow flowers and 5 pink flowers. How many flowers are there in all?
  37. 37.Priya has 4 balloons and gets 9 balloons more. How many balloons does Priya have now?
  38. 38.There are 11 green balloons and 9 red balloons. How many balloons are there in all?
  39. 39.1 + 8 + 11 =
  40. 40.? + 1 = 20

Answer key

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

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