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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 457 · 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.Vivaan has 12 balloons and gets 7 balloons more. How many balloons does Vivaan have now?
  2. 2.There are 12 pink balls and 8 red balls. How many balls are there in all?
  3. 3.15 + 3 =
  4. 4.Lakshmi has 11 balls and gets 7 balls more. How many balls does Lakshmi have now?
  5. 5.Rohan has 14 pencils and gets 2 pencils more. How many pencils does Rohan have now?
  6. 6.Zoya has 9 crayons and gets 11 crayons more. How many crayons does Zoya have now?
  7. 7.10 + 2 =
  8. 8.There are 9 red balloons and 4 blue balloons. How many balloons are there in all?
  9. 9.Dev has 9 balloons and gets 6 balloons more. How many balloons does Dev have now?
  10. 10.9 + 10 =
  11. 11.1 + ? = 3
  12. 12.Diya has 10 mangoes and gets 8 mangoes more. How many mangoes does Diya have now?
  13. 13.Ananya has 11 balls and gets 9 balls more. How many balls does Ananya have now?
  14. 14.3 + 2 + 2 =
  15. 15.There are 12 green flowers and 3 blue flowers. How many flowers are there in all?
  16. 16.Zoya has 3 kites and gets 9 kites more. How many kites does Zoya have now?
  17. 17.There are 5 blue kites and 7 white kites. How many kites are there in all?
  18. 18.There are 12 pink balls and 3 blue balls. How many balls are there in all?
  19. 19.4 + 3 + 11 =
  20. 20.Kabir has 12 pencils and gets 4 pencils more. How many pencils does Kabir have now?
  21. 21.13 + ? = 17
  22. 22.Kabir has 13 kites and gets 6 kites more. How many kites does Kabir have now?
  23. 23.2 + 8 =
  24. 24.? + 13 = 15
  25. 25.Ishaan has 2 pencils and gets 4 pencils more. How many pencils does Ishaan have now?
  26. 26.There are 3 blue kites and 8 red kites. How many kites are there in all?
  27. 27.? + 11 = 15
  28. 28.8 + 1 + 9 =
  29. 29.There are 7 green kites and 4 pink kites. How many kites are there in all?
  30. 30.7 + 4 + 3 =
  31. 31.There are 4 green kites and 12 white kites. How many kites are there in all?
  32. 32.4 + ? = 6
  33. 33.10 + ? = 17
  34. 34.8 + ? = 19
  35. 35.There are 5 yellow balls and 8 green balls. How many balls are there in all?
  36. 36.Sneha has 15 shells and gets 1 shell more. How many shells does Sneha have now?
  37. 37.14 + 4 =
  38. 38.12 + 4 =
  39. 39.? + 9 = 13
  40. 40.15 + ? = 17

Answer key

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

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