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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 374 · 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 + 8 + 3 =
  2. 2.3 + 3 + 12 =
  3. 3.There are 4 blue crayons and 11 pink crayons. How many crayons are there in all?
  4. 4.1 + 3 + 13 =
  5. 5.? + 1 = 8
  6. 6.There are 4 white balls and 13 pink balls. How many balls are there in all?
  7. 7.Diya has 6 pencils and gets 5 pencils more. How many pencils does Diya have now?
  8. 8.12 + 1 =
  9. 9.3 + 17 =
  10. 10.4 + 1 + 8 =
  11. 11.14 + 6 =
  12. 12.17 + 1 =
  13. 13.There are 12 red balls and 6 blue balls. How many balls are there in all?
  14. 14.Pooja has 14 crayons and gets 3 crayons more. How many crayons does Pooja have now?
  15. 15.8 + 5 + 7 =
  16. 16.Rohan has 2 balloons and gets 7 balloons more. How many balloons does Rohan have now?
  17. 17.Isha has 10 balloons and gets 7 balloons more. How many balloons does Isha have now?
  18. 18.4 + 8 + 3 =
  19. 19.There are 4 green balloons and 4 red balloons. How many balloons are there in all?
  20. 20.1 + ? = 3
  21. 21.2 + 18 =
  22. 22.Sneha has 11 mangoes and gets 7 mangoes more. How many mangoes does Sneha have now?
  23. 23.7 + 3 + 10 =
  24. 24.There are 9 red kites and 8 blue kites. How many kites are there in all?
  25. 25.Karan has 14 shells and gets 1 shell more. How many shells does Karan have now?
  26. 26.1 + 2 + 4 =
  27. 27.14 + 4 =
  28. 28.Tara has 2 crayons and gets 4 crayons more. How many crayons does Tara have now?
  29. 29.Arjun has 6 bananas and gets 4 bananas more. How many bananas does Arjun have now?
  30. 30.There are 6 green flowers and 9 blue flowers. How many flowers are there in all?
  31. 31.Nisha has 7 balloons and gets 2 balloons more. How many balloons does Nisha have now?
  32. 32.3 + 15 =
  33. 33.There are 7 red balloons and 3 blue balloons. How many balloons are there in all?
  34. 34.There are 12 red balloons and 3 blue balloons. How many balloons are there in all?
  35. 35.13 + 4 =
  36. 36.8 + 4 =
  37. 37.4 + 10 =
  38. 38.There are 3 yellow balloons and 14 green balloons. How many balloons are there in all?
  39. 39.There are 8 pink kites and 7 yellow kites. How many kites are there in all?
  40. 40.There are 11 green kites and 6 yellow kites. How many kites are there in all?

Answer key

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

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