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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 243 · 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.Farhan has 9 balls and gets 1 ball more. How many balls does Farhan have now?
  2. 2.There are 11 red flowers and 4 blue flowers. How many flowers are there in all?
  3. 3.6 + 10 =
  4. 4.There are 6 blue kites and 12 white kites. How many kites are there in all?
  5. 5.4 + 10 =
  6. 6.There are 2 blue kites and 12 green kites. How many kites are there in all?
  7. 7.3 + ? = 15
  8. 8.5 + ? = 19
  9. 9.There are 12 blue crayons and 5 red crayons. How many crayons are there in all?
  10. 10.? + 4 = 16
  11. 11.19 + 1 =
  12. 12.3 + 9 =
  13. 13.1 + 8 =
  14. 14.9 + 6 =
  15. 15.1 + 1 =
  16. 16.There are 10 blue kites and 2 red kites. How many kites are there in all?
  17. 17.Zoya has 15 crayons and gets 3 crayons more. How many crayons does Zoya have now?
  18. 18.Farhan has 4 marbles and gets 4 marbles more. How many marbles does Farhan have now?
  19. 19.Isha has 4 flowers and gets 3 flowers more. How many flowers does Isha have now?
  20. 20.? + 2 = 16
  21. 21.There are 10 blue flowers and 2 green flowers. How many flowers are there in all?
  22. 22.4 + ? = 14
  23. 23.Isha has 10 kites and gets 10 kites more. How many kites does Isha have now?
  24. 24.Kavya has 6 mangoes and gets 14 mangoes more. How many mangoes does Kavya have now?
  25. 25.There are 2 pink balls and 5 blue balls. How many balls are there in all?
  26. 26.15 + 5 =
  27. 27.4 + 2 + 2 =
  28. 28.Karan has 2 shells and gets 1 shell more. How many shells does Karan have now?
  29. 29.5 + 8 + 1 =
  30. 30.4 + 3 =
  31. 31.There are 2 red kites and 12 green kites. How many kites are there in all?
  32. 32.17 + 3 =
  33. 33.6 + 4 + 8 =
  34. 34.Rohan has 7 marbles and gets 8 marbles more. How many marbles does Rohan have now?
  35. 35.8 + 3 =
  36. 36.There are 8 blue crayons and 6 white crayons. How many crayons are there in all?
  37. 37.? + 1 = 7
  38. 38.Rohan has 8 balloons and gets 2 balloons more. How many balloons does Rohan have now?
  39. 39.There are 4 red beads and 14 pink beads. How many beads are there in all?
  40. 40.There are 6 yellow balloons and 8 pink balloons. How many balloons are there in all?

Answer key

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

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