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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 874 · 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. 1.4 + 14 =
  2. 2.There are 9 red beads and 5 green beads. How many beads are there in all?
  3. 3.3 + 4 + 2 =
  4. 4.Kavya has 9 crayons and gets 6 crayons more. How many crayons does Kavya have now?
  5. 5.There are 10 white balls and 6 yellow balls. How many balls are there in all?
  6. 6.1 + 7 + 11 =
  7. 7.4 + 5 + 6 =
  8. 8.12 + 2 =
  9. 9.Meera has 3 balls and gets 1 ball more. How many balls does Meera have now?
  10. 10.2 + 3 + 11 =
  11. 11.? + 7 = 9
  12. 12.3 + ? = 9
  13. 13.14 + 3 =
  14. 14.There are 11 pink crayons and 5 yellow crayons. How many crayons are there in all?
  15. 15.1 + 19 =
  16. 16.There are 12 white flowers and 2 yellow flowers. How many flowers are there in all?
  17. 17.18 + 2 =
  18. 18.Karan has 10 marbles and gets 8 marbles more. How many marbles does Karan have now?
  19. 19.Lakshmi has 12 kites and gets 6 kites more. How many kites does Lakshmi have now?
  20. 20.Nisha has 9 marbles and gets 4 marbles more. How many marbles does Nisha have now?
  21. 21.There are 12 green kites and 4 red kites. How many kites are there in all?
  22. 22.15 + ? = 17
  23. 23.Riya has 12 balls and gets 8 balls more. How many balls does Riya have now?
  24. 24.11 + 3 =
  25. 25.There are 8 red flowers and 10 pink flowers. How many flowers are there in all?
  26. 26.3 + 13 =
  27. 27.? + 1 = 13
  28. 28.There are 2 blue balloons and 12 green balloons. How many balloons are there in all?
  29. 29.17 + 3 =
  30. 30.? + 1 = 3
  31. 31.? + 9 = 14
  32. 32.13 + 1 =
  33. 33.6 + 7 + 3 =
  34. 34.11 + ? = 15
  35. 35.Kabir has 11 mangoes and gets 4 mangoes more. How many mangoes does Kabir have now?
  36. 36.8 + 2 + 5 =
  37. 37.There are 7 green beads and 10 pink beads. How many beads are there in all?
  38. 38.Saanvi has 8 mangoes and gets 11 mangoes more. How many mangoes does Saanvi have now?
  39. 39.Isha has 2 shells and gets 1 shell more. How many shells does Isha have now?
  40. 40.Rohan has 12 bananas and gets 1 banana more. How many bananas does Rohan have now?

Answer key

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

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