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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 554 · 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 9 blue crayons and 2 yellow crayons. How many crayons are there in all?
  2. 2.8 + 6 =
  3. 3.? + 4 = 18
  4. 4.10 + 8 =
  5. 5.2 + 4 + 11 =
  6. 6.3 + 4 + 7 =
  7. 7.There are 9 pink beads and 2 yellow beads. How many beads are there in all?
  8. 8.Priya has 11 books and gets 8 books more. How many books does Priya have now?
  9. 9.5 + 3 + 3 =
  10. 10.3 + 2 =
  11. 11.2 + ? = 4
  12. 12.? + 7 = 12
  13. 13.6 + ? = 8
  14. 14.18 + 1 =
  15. 15.There are 7 red beads and 10 blue beads. How many beads are there in all?
  16. 16.1 + 15 =
  17. 17.7 + 4 + 6 =
  18. 18.? + 3 = 7
  19. 19.3 + 4 + 1 =
  20. 20.There are 11 green beads and 4 white beads. How many beads are there in all?
  21. 21.There are 2 pink flowers and 9 yellow flowers. How many flowers are there in all?
  22. 22.1 + 4 + 15 =
  23. 23.16 + 3 =
  24. 24.Rohan has 12 mangoes and gets 2 mangoes more. How many mangoes does Rohan have now?
  25. 25.1 + 12 =
  26. 26.7 + 8 + 2 =
  27. 27.Riya has 7 books and gets 13 books more. How many books does Riya have now?
  28. 28.7 + 6 + 6 =
  29. 29.2 + 12 =
  30. 30.Isha has 8 flowers and gets 4 flowers more. How many flowers does Isha have now?
  31. 31.There are 5 white balloons and 10 red balloons. How many balloons are there in all?
  32. 32.3 + 17 =
  33. 33.3 + 3 + 5 =
  34. 34.6 + 5 + 4 =
  35. 35.Rahul has 6 bananas and gets 3 bananas more. How many bananas does Rahul have now?
  36. 36.1 + ? = 15
  37. 37.2 + 8 + 2 =
  38. 38.Karan has 4 bananas and gets 5 bananas more. How many bananas does Karan have now?
  39. 39.There are 11 yellow kites and 4 white kites. How many kites are there in all?
  40. 40.7 + ? = 8

Answer key

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

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