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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 171 · 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.Vivaan has 7 mangoes and gets 11 mangoes more. How many mangoes does Vivaan have now?
  2. 2.There are 7 red flowers and 3 white flowers. How many flowers are there in all?
  3. 3.? + 6 = 18
  4. 4.12 + 2 =
  5. 5.There are 5 red beads and 3 white beads. How many beads are there in all?
  6. 6.10 + 1 =
  7. 7.Lakshmi has 13 laddoos and gets 2 laddoos more. How many laddoos does Lakshmi have now?
  8. 8.There are 8 blue balls and 12 green balls. How many balls are there in all?
  9. 9.4 + 2 + 8 =
  10. 10.2 + 2 + 15 =
  11. 11.Zoya has 6 marbles and gets 13 marbles more. How many marbles does Zoya have now?
  12. 12.7 + 5 + 6 =
  13. 13.3 + ? = 5
  14. 14.2 + 3 + 10 =
  15. 15.1 + 8 + 2 =
  16. 16.9 + 11 =
  17. 17.There are 5 blue kites and 4 pink kites. How many kites are there in all?
  18. 18.Rohan has 13 marbles and gets 4 marbles more. How many marbles does Rohan have now?
  19. 19.? + 9 = 17
  20. 20.Meera has 9 kites and gets 9 kites more. How many kites does Meera have now?
  21. 21.4 + ? = 15
  22. 22.6 + ? = 12
  23. 23.There are 4 white balls and 4 blue balls. How many balls are there in all?
  24. 24.? + 3 = 8
  25. 25.6 + 3 =
  26. 26.Manav has 13 laddoos and gets 7 laddoos more. How many laddoos does Manav have now?
  27. 27.There are 8 green balloons and 5 blue balloons. How many balloons are there in all?
  28. 28.Nisha has 6 marbles and gets 1 marble more. How many marbles does Nisha have now?
  29. 29.Manav has 8 balls and gets 2 balls more. How many balls does Manav have now?
  30. 30.7 + 2 =
  31. 31.4 + 5 + 10 =
  32. 32.7 + 5 + 4 =
  33. 33.There are 9 blue flowers and 11 red flowers. How many flowers are there in all?
  34. 34.There are 11 green beads and 4 blue beads. How many beads are there in all?
  35. 35.? + 5 = 14
  36. 36.6 + 1 + 11 =
  37. 37.5 + 2 + 13 =
  38. 38.6 + 2 =
  39. 39.1 + 2 =
  40. 40.? + 1 = 6

Answer key

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

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