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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 59 · 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 green flowers and 8 yellow flowers. How many flowers are there in all?
  2. 2.There are 9 yellow balls and 5 white balls. How many balls are there in all?
  3. 3.8 + 1 + 5 =
  4. 4.There are 5 green kites and 6 red kites. How many kites are there in all?
  5. 5.? + 4 = 6
  6. 6.4 + 7 + 2 =
  7. 7.3 + ? = 6
  8. 8.2 + 8 + 3 =
  9. 9.There are 5 blue crayons and 7 red crayons. How many crayons are there in all?
  10. 10.1 + 10 =
  11. 11.4 + 13 =
  12. 12.Zoya has 15 balls and gets 3 balls more. How many balls does Zoya have now?
  13. 13.5 + 7 + 7 =
  14. 14.Isha has 5 balls and gets 11 balls more. How many balls does Isha have now?
  15. 15.There are 11 green balls and 5 red balls. How many balls are there in all?
  16. 16.Arjun has 4 balloons and gets 8 balloons more. How many balloons does Arjun have now?
  17. 17.? + 4 = 18
  18. 18.3 + ? = 20
  19. 19.10 + 7 =
  20. 20.15 + 2 =
  21. 21.4 + 4 =
  22. 22.5 + 5 + 4 =
  23. 23.2 + 4 + 6 =
  24. 24.There are 2 blue crayons and 15 white crayons. How many crayons are there in all?
  25. 25.2 + 7 + 3 =
  26. 26.There are 3 blue balls and 4 white balls. How many balls are there in all?
  27. 27.12 + 6 =
  28. 28.4 + ? = 20
  29. 29.8 + ? = 18
  30. 30.There are 9 red balls and 5 white balls. How many balls are there in all?
  31. 31.Sneha has 13 shells and gets 4 shells more. How many shells does Sneha have now?
  32. 32.16 + 3 =
  33. 33.8 + 5 + 1 =
  34. 34.6 + 4 =
  35. 35.There are 7 pink crayons and 10 white crayons. How many crayons are there in all?
  36. 36.1 + ? = 6
  37. 37.? + 16 = 17
  38. 38.15 + 3 =
  39. 39.There are 7 red crayons and 3 blue crayons. How many crayons are there in all?
  40. 40.Karan has 10 bananas and gets 8 bananas more. How many bananas does Karan have now?

Answer key

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

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