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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 355 · 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 6 red kites and 13 blue kites. How many kites are there in all?
  2. 2.There are 7 blue balls and 2 green balls. How many balls are there in all?
  3. 3.Saanvi has 12 balls and gets 8 balls more. How many balls does Saanvi have now?
  4. 4.Priya has 4 books and gets 14 books more. How many books does Priya have now?
  5. 5.Arjun has 2 balls and gets 5 balls more. How many balls does Arjun have now?
  6. 6.2 + 18 =
  7. 7.There are 2 blue beads and 13 green beads. How many beads are there in all?
  8. 8.Arjun has 5 balls and gets 2 balls more. How many balls does Arjun have now?
  9. 9.Rahul has 4 balloons and gets 5 balloons more. How many balloons does Rahul have now?
  10. 10.8 + 5 =
  11. 11.1 + 4 =
  12. 12.1 + 8 + 9 =
  13. 13.There are 9 pink balls and 2 red balls. How many balls are there in all?
  14. 14.9 + 10 =
  15. 15.2 + 1 + 5 =
  16. 16.? + 13 = 17
  17. 17.9 + ? = 20
  18. 18.? + 2 = 8
  19. 19.1 + ? = 16
  20. 20.? + 1 = 9
  21. 21.? + 3 = 6
  22. 22.2 + 17 =
  23. 23.2 + 4 + 8 =
  24. 24.5 + 15 =
  25. 25.Pooja has 4 bananas and gets 3 bananas more. How many bananas does Pooja have now?
  26. 26.2 + 15 =
  27. 27.? + 1 = 4
  28. 28.17 + 2 =
  29. 29.1 + 1 =
  30. 30.Isha has 7 flowers and gets 2 flowers more. How many flowers does Isha have now?
  31. 31.5 + 11 =
  32. 32.9 + 3 =
  33. 33.4 + 1 + 13 =
  34. 34.1 + 2 + 16 =
  35. 35.2 + 5 + 13 =
  36. 36.? + 7 = 9
  37. 37.3 + 2 + 10 =
  38. 38.There are 6 yellow beads and 6 white beads. How many beads are there in all?
  39. 39.Vivaan has 13 mangoes and gets 5 mangoes more. How many mangoes does Vivaan have now?
  40. 40.7 + ? = 14

Answer key

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

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