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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 664 · 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. 1.9 + 2 =
  2. 2.Tara has 5 shells and gets 4 shells more. How many shells does Tara have now?
  3. 3.There are 7 red balls and 11 green balls. How many balls are there in all?
  4. 4.There are 12 blue kites and 4 pink kites. How many kites are there in all?
  5. 5.Dev has 2 flowers and gets 8 flowers more. How many flowers does Dev have now?
  6. 6.10 + 8 =
  7. 7.Rahul has 11 pencils and gets 9 pencils more. How many pencils does Rahul have now?
  8. 8.Saanvi has 13 mangoes and gets 3 mangoes more. How many mangoes does Saanvi have now?
  9. 9.2 + 13 =
  10. 10.9 + 7 =
  11. 11.4 + ? = 20
  12. 12.There are 7 yellow balloons and 2 red balloons. How many balloons are there in all?
  13. 13.4 + 8 + 8 =
  14. 14.? + 9 = 17
  15. 15.4 + 4 =
  16. 16.Tara has 4 marbles and gets 8 marbles more. How many marbles does Tara have now?
  17. 17.There are 10 green balls and 3 blue balls. How many balls are there in all?
  18. 18.12 + 2 =
  19. 19.5 + ? = 11
  20. 20.1 + 7 =
  21. 21.1 + 1 + 9 =
  22. 22.1 + ? = 4
  23. 23.Kabir has 10 books and gets 10 books more. How many books does Kabir have now?
  24. 24.? + 5 = 18
  25. 25.Vivaan has 11 kites and gets 1 kite more. How many kites does Vivaan have now?
  26. 26.Karan has 12 balls and gets 8 balls more. How many balls does Karan have now?
  27. 27.Zoya has 9 marbles and gets 1 marble more. How many marbles does Zoya have now?
  28. 28.1 + 18 =
  29. 29.6 + 12 =
  30. 30.2 + 8 =
  31. 31.1 + 10 =
  32. 32.2 + ? = 6
  33. 33.1 + ? = 7
  34. 34.13 + 1 =
  35. 35.Aditya has 12 kites and gets 2 kites more. How many kites does Aditya have now?
  36. 36.There are 3 yellow balls and 14 blue balls. How many balls are there in all?
  37. 37.? + 7 = 12
  38. 38.Karan has 15 balls and gets 1 ball more. How many balls does Karan have now?
  39. 39.? + 9 = 20
  40. 40.Aarav has 5 crayons and gets 3 crayons more. How many crayons does Aarav have now?

Answer key

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

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