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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 575 · 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.Ishaan has 15 laddoos and gets 3 laddoos more. How many laddoos does Ishaan have now?
  2. 2.3 + 2 =
  3. 3.There are 4 blue flowers and 6 yellow flowers. How many flowers are there in all?
  4. 4.There are 12 green beads and 3 red beads. How many beads are there in all?
  5. 5.2 + 15 =
  6. 6.2 + 18 =
  7. 7.Sneha has 5 flowers and gets 13 flowers more. How many flowers does Sneha have now?
  8. 8.? + 3 = 7
  9. 9.? + 13 = 15
  10. 10.Tara has 3 flowers and gets 15 flowers more. How many flowers does Tara have now?
  11. 11.2 + 12 =
  12. 12.There are 7 blue kites and 7 yellow kites. How many kites are there in all?
  13. 13.18 + 2 =
  14. 14.There are 8 blue beads and 2 red beads. How many beads are there in all?
  15. 15.There are 12 white balloons and 4 red balloons. How many balloons are there in all?
  16. 16.Karan has 12 balloons and gets 5 balloons more. How many balloons does Karan have now?
  17. 17.There are 5 green balloons and 9 blue balloons. How many balloons are there in all?
  18. 18.8 + 8 + 2 =
  19. 19.There are 10 red balloons and 5 blue balloons. How many balloons are there in all?
  20. 20.There are 11 pink balloons and 7 yellow balloons. How many balloons are there in all?
  21. 21.Isha has 10 balls and gets 6 balls more. How many balls does Isha have now?
  22. 22.5 + 9 =
  23. 23.17 + 1 =
  24. 24.Pooja has 5 marbles and gets 7 marbles more. How many marbles does Pooja have now?
  25. 25.13 + 4 =
  26. 26.6 + 5 + 5 =
  27. 27.4 + 6 =
  28. 28.5 + 6 + 1 =
  29. 29.? + 2 = 7
  30. 30.9 + 4 =
  31. 31.1 + 4 + 14 =
  32. 32.Isha has 13 balls and gets 6 balls more. How many balls does Isha have now?
  33. 33.Nisha has 3 marbles and gets 2 marbles more. How many marbles does Nisha have now?
  34. 34.Ananya has 10 mangoes and gets 7 mangoes more. How many mangoes does Ananya have now?
  35. 35.There are 9 green balls and 4 blue balls. How many balls are there in all?
  36. 36.Vivaan has 13 shells and gets 1 shell more. How many shells does Vivaan have now?
  37. 37.3 + 2 + 1 =
  38. 38.19 + 1 =
  39. 39.8 + 6 + 5 =
  40. 40.? + 2 = 12

Answer key

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

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