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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 360 · 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 red beads and 13 blue beads. How many beads are there in all?
  2. 2.19 + 1 =
  3. 3.7 + 3 =
  4. 4.? + 8 = 19
  5. 5.7 + ? = 14
  6. 6.There are 9 blue crayons and 10 red crayons. How many crayons are there in all?
  7. 7.12 + 4 =
  8. 8.? + 4 = 7
  9. 9.Saanvi has 7 balls and gets 5 balls more. How many balls does Saanvi have now?
  10. 10.1 + 7 =
  11. 11.There are 11 blue beads and 4 green beads. How many beads are there in all?
  12. 12.Aarav has 9 books and gets 3 books more. How many books does Aarav have now?
  13. 13.Ishaan has 9 mangoes and gets 3 mangoes more. How many mangoes does Ishaan have now?
  14. 14.? + 13 = 17
  15. 15.There are 11 white balloons and 6 blue balloons. How many balloons are there in all?
  16. 16.Meera has 4 kites and gets 5 kites more. How many kites does Meera have now?
  17. 17.9 + ? = 17
  18. 18.9 + 10 =
  19. 19.11 + 7 =
  20. 20.Riya has 11 pencils and gets 7 pencils more. How many pencils does Riya have now?
  21. 21.1 + 10 =
  22. 22.5 + ? = 6
  23. 23.There are 2 red balloons and 13 white balloons. How many balloons are there in all?
  24. 24.7 + 10 =
  25. 25.9 + 3 =
  26. 26.Manav has 5 shells and gets 15 shells more. How many shells does Manav have now?
  27. 27.? + 5 = 11
  28. 28.Vivaan has 13 crayons and gets 1 crayon more. How many crayons does Vivaan have now?
  29. 29.Kabir has 3 kites and gets 11 kites more. How many kites does Kabir have now?
  30. 30.1 + ? = 9
  31. 31.Dev has 3 laddoos and gets 3 laddoos more. How many laddoos does Dev have now?
  32. 32.5 + 15 =
  33. 33.3 + 15 =
  34. 34.There are 2 yellow balloons and 16 red balloons. How many balloons are there in all?
  35. 35.? + 7 = 10
  36. 36.There are 3 red beads and 17 green beads. How many beads are there in all?
  37. 37.2 + 6 + 12 =
  38. 38.Gurpreet has 14 balls and gets 5 balls more. How many balls does Gurpreet have now?
  39. 39.There are 4 pink balls and 15 red balls. How many balls are there in all?
  40. 40.Kavya has 12 bananas and gets 2 bananas more. How many bananas does Kavya have now?

Answer key

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

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