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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 718 · 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. 1.1 + ? = 16
  2. 2.There are 5 blue balloons and 4 pink balloons. How many balloons are there in all?
  3. 3.2 + 2 + 3 =
  4. 4.13 + 4 =
  5. 5.? + 7 = 17
  6. 6.There are 2 white kites and 12 blue kites. How many kites are there in all?
  7. 7.There are 6 green kites and 12 blue kites. How many kites are there in all?
  8. 8.Kavya has 4 kites and gets 12 kites more. How many kites does Kavya have now?
  9. 9.Gurpreet has 2 balloons and gets 6 balloons more. How many balloons does Gurpreet have now?
  10. 10.7 + 5 + 5 =
  11. 11.16 + 2 =
  12. 12.3 + 5 + 11 =
  13. 13.8 + 7 + 5 =
  14. 14.1 + 1 + 1 =
  15. 15.5 + 13 =
  16. 16.Pooja has 2 bananas and gets 17 bananas more. How many bananas does Pooja have now?
  17. 17.Kabir has 7 shells and gets 5 shells more. How many shells does Kabir have now?
  18. 18.Rahul has 7 bananas and gets 3 bananas more. How many bananas does Rahul have now?
  19. 19.10 + 1 =
  20. 20.Isha has 9 marbles and gets 6 marbles more. How many marbles does Isha have now?
  21. 21.7 + ? = 10
  22. 22.There are 6 blue beads and 8 pink beads. How many beads are there in all?
  23. 23.7 + 7 + 3 =
  24. 24.1 + 2 + 7 =
  25. 25.6 + ? = 12
  26. 26.5 + 2 =
  27. 27.Pooja has 4 laddoos and gets 7 laddoos more. How many laddoos does Pooja have now?
  28. 28.10 + 8 =
  29. 29.? + 5 = 7
  30. 30.1 + 2 =
  31. 31.Ananya has 6 balls and gets 3 balls more. How many balls does Ananya have now?
  32. 32.Vivaan has 15 mangoes and gets 4 mangoes more. How many mangoes does Vivaan have now?
  33. 33.15 + 3 =
  34. 34.There are 4 blue crayons and 12 pink crayons. How many crayons are there in all?
  35. 35.6 + 3 + 11 =
  36. 36.11 + 3 =
  37. 37.1 + ? = 4
  38. 38.4 + ? = 19
  39. 39.4 + ? = 9
  40. 40.7 + 8 + 3 =

Answer key

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

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