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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 673 · 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 7 blue crayons and 7 pink crayons. How many crayons are there in all?
  2. 2.Meera has 6 marbles and gets 7 marbles more. How many marbles does Meera have now?
  3. 3.10 + 9 =
  4. 4.3 + 5 =
  5. 5.13 + 5 =
  6. 6.16 + 2 =
  7. 7.5 + 5 + 3 =
  8. 8.8 + 8 + 2 =
  9. 9.There are 9 red crayons and 3 pink crayons. How many crayons are there in all?
  10. 10.Vivaan has 6 bananas and gets 10 bananas more. How many bananas does Vivaan have now?
  11. 11.3 + 15 =
  12. 12.5 + 5 + 4 =
  13. 13.13 + ? = 14
  14. 14.? + 5 = 13
  15. 15.There are 7 pink balloons and 4 blue balloons. How many balloons are there in all?
  16. 16.3 + ? = 6
  17. 17.13 + 2 =
  18. 18.Isha has 9 books and gets 8 books more. How many books does Isha have now?
  19. 19.There are 2 green flowers and 6 white flowers. How many flowers are there in all?
  20. 20.4 + 5 =
  21. 21.There are 4 white kites and 2 pink kites. How many kites are there in all?
  22. 22.2 + 6 + 11 =
  23. 23.2 + 3 + 5 =
  24. 24.8 + 6 + 2 =
  25. 25.Rohan has 8 mangoes and gets 7 mangoes more. How many mangoes does Rohan have now?
  26. 26.10 + ? = 12
  27. 27.3 + 8 + 8 =
  28. 28.1 + 5 + 14 =
  29. 29.Riya has 5 bananas and gets 9 bananas more. How many bananas does Riya have now?
  30. 30.6 + 4 + 6 =
  31. 31.There are 8 red beads and 4 green beads. How many beads are there in all?
  32. 32.5 + 4 + 4 =
  33. 33.1 + ? = 6
  34. 34.4 + 4 + 5 =
  35. 35.Priya has 15 pencils and gets 3 pencils more. How many pencils does Priya have now?
  36. 36.12 + 6 =
  37. 37.Meera has 9 mangoes and gets 7 mangoes more. How many mangoes does Meera have now?
  38. 38.11 + 5 =
  39. 39.6 + 7 =
  40. 40.8 + 7 + 5 =

Answer key

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

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