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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 270 · 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. 1.2 + ? = 3
  2. 2.Karan has 6 balloons and gets 4 balloons more. How many balloons does Karan have now?
  3. 3.2 + 4 =
  4. 4.8 + 2 + 3 =
  5. 5.6 + 6 =
  6. 6.? + 1 = 3
  7. 7.8 + 4 + 6 =
  8. 8.16 + 2 =
  9. 9.Gurpreet has 11 balls and gets 7 balls more. How many balls does Gurpreet have now?
  10. 10.? + 2 = 9
  11. 11.6 + 2 + 3 =
  12. 12.There are 9 pink flowers and 11 white flowers. How many flowers are there in all?
  13. 13.Priya has 13 balloons and gets 5 balloons more. How many balloons does Priya have now?
  14. 14.12 + 5 =
  15. 15.There are 2 blue kites and 7 red kites. How many kites are there in all?
  16. 16.3 + 8 =
  17. 17.There are 12 yellow balls and 8 white balls. How many balls are there in all?
  18. 18.There are 12 pink kites and 3 white kites. How many kites are there in all?
  19. 19.5 + ? = 7
  20. 20.7 + 3 =
  21. 21.11 + 5 =
  22. 22.There are 8 pink flowers and 2 blue flowers. How many flowers are there in all?
  23. 23.There are 8 yellow kites and 12 white kites. How many kites are there in all?
  24. 24.6 + 3 + 7 =
  25. 25.7 + 4 + 1 =
  26. 26.2 + ? = 6
  27. 27.1 + ? = 18
  28. 28.? + 1 = 15
  29. 29.Dev has 13 pencils and gets 2 pencils more. How many pencils does Dev have now?
  30. 30.? + 4 = 5
  31. 31.4 + 7 + 6 =
  32. 32.Lakshmi has 10 mangoes and gets 4 mangoes more. How many mangoes does Lakshmi have now?
  33. 33.7 + 4 =
  34. 34.14 + 3 =
  35. 35.There are 3 white balloons and 3 green balloons. How many balloons are there in all?
  36. 36.Pooja has 10 balloons and gets 4 balloons more. How many balloons does Pooja have now?
  37. 37.There are 9 blue flowers and 6 pink flowers. How many flowers are there in all?
  38. 38.Aarav has 4 balloons and gets 12 balloons more. How many balloons does Aarav have now?
  39. 39.Meera has 3 pencils and gets 8 pencils more. How many pencils does Meera have now?
  40. 40.There are 2 pink crayons and 3 white crayons. How many crayons are there in all?

Answer key

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

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