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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 120 · 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.Kavya has 4 mangoes and gets 2 mangoes more. How many mangoes does Kavya have now?
  2. 2.? + 2 = 3
  3. 3.Joseph has 12 books and gets 3 books more. How many books does Joseph have now?
  4. 4.5 + 4 =
  5. 5.There are 10 blue crayons and 4 white crayons. How many crayons are there in all?
  6. 6.19 + 1 =
  7. 7.Tara has 14 pencils and gets 5 pencils more. How many pencils does Tara have now?
  8. 8.14 + 1 =
  9. 9.10 + 8 =
  10. 10.3 + 5 + 4 =
  11. 11.17 + 1 =
  12. 12.11 + 3 =
  13. 13.1 + ? = 3
  14. 14.Tara has 9 flowers and gets 11 flowers more. How many flowers does Tara have now?
  15. 15.1 + 8 + 11 =
  16. 16.There are 9 red kites and 9 blue kites. How many kites are there in all?
  17. 17.There are 4 green beads and 5 red beads. How many beads are there in all?
  18. 18.Gurpreet has 8 crayons and gets 2 crayons more. How many crayons does Gurpreet have now?
  19. 19.There are 11 yellow balls and 8 blue balls. How many balls are there in all?
  20. 20.3 + 9 =
  21. 21.3 + 7 + 2 =
  22. 22.Manav has 4 kites and gets 13 kites more. How many kites does Manav have now?
  23. 23.? + 13 = 18
  24. 24.There are 10 pink beads and 3 white beads. How many beads are there in all?
  25. 25.2 + ? = 7
  26. 26.10 + 9 =
  27. 27.There are 6 red flowers and 10 pink flowers. How many flowers are there in all?
  28. 28.4 + 7 + 3 =
  29. 29.7 + ? = 16
  30. 30.4 + 11 =
  31. 31.Rohan has 8 flowers and gets 8 flowers more. How many flowers does Rohan have now?
  32. 32.? + 6 = 18
  33. 33.7 + 8 + 5 =
  34. 34.Meera has 4 bananas and gets 2 bananas more. How many bananas does Meera have now?
  35. 35.Kavya has 7 shells and gets 4 shells more. How many shells does Kavya have now?
  36. 36.There are 4 pink kites and 11 white kites. How many kites are there in all?
  37. 37.10 + ? = 20
  38. 38.There are 12 red balloons and 3 blue balloons. How many balloons are there in all?
  39. 39.18 + 2 =
  40. 40.Rahul has 2 shells and gets 16 shells more. How many shells does Rahul have now?

Answer key

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

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