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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 771 · 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.Ishaan has 13 flowers and gets 3 flowers more. How many flowers does Ishaan have now?
  2. 2.13 + 7 =
  3. 3.3 + ? = 20
  4. 4.There are 8 white balloons and 4 blue balloons. How many balloons are there in all?
  5. 5.1 + ? = 6
  6. 6.There are 8 green kites and 11 white kites. How many kites are there in all?
  7. 7.There are 9 yellow kites and 9 pink kites. How many kites are there in all?
  8. 8.5 + 3 =
  9. 9.Joseph has 13 balls and gets 5 balls more. How many balls does Joseph have now?
  10. 10.10 + 2 =
  11. 11.Joseph has 3 mangoes and gets 4 mangoes more. How many mangoes does Joseph have now?
  12. 12.Lakshmi has 6 kites and gets 3 kites more. How many kites does Lakshmi have now?
  13. 13.Ishaan has 9 balloons and gets 6 balloons more. How many balloons does Ishaan have now?
  14. 14.Lakshmi has 3 flowers and gets 3 flowers more. How many flowers does Lakshmi have now?
  15. 15.13 + ? = 20
  16. 16.Sneha has 2 crayons and gets 11 crayons more. How many crayons does Sneha have now?
  17. 17.? + 2 = 3
  18. 18.Priya has 13 mangoes and gets 7 mangoes more. How many mangoes does Priya have now?
  19. 19.11 + 1 =
  20. 20.Aarav has 10 crayons and gets 5 crayons more. How many crayons does Aarav have now?
  21. 21.6 + 7 =
  22. 22.7 + 4 =
  23. 23.13 + 2 =
  24. 24.Ishaan has 14 kites and gets 3 kites more. How many kites does Ishaan have now?
  25. 25.Kabir has 8 balls and gets 11 balls more. How many balls does Kabir have now?
  26. 26.? + 1 = 6
  27. 27.3 + 7 =
  28. 28.? + 3 = 4
  29. 29.8 + 5 + 6 =
  30. 30.? + 4 = 6
  31. 31.6 + ? = 17
  32. 32.Arjun has 2 crayons and gets 18 crayons more. How many crayons does Arjun have now?
  33. 33.1 + 7 + 5 =
  34. 34.4 + 6 =
  35. 35.? + 16 = 18
  36. 36.There are 6 red kites and 12 blue kites. How many kites are there in all?
  37. 37.Arjun has 9 mangoes and gets 10 mangoes more. How many mangoes does Arjun have now?
  38. 38.4 + 8 + 6 =
  39. 39.Gurpreet has 8 crayons and gets 6 crayons more. How many crayons does Gurpreet have now?
  40. 40.3 + ? = 15

Answer key

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

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