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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 969 · 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. 1.16 + 4 =
  2. 2.3 + ? = 7
  3. 3.13 + 2 =
  4. 4.There are 4 green flowers and 9 yellow flowers. How many flowers are there in all?
  5. 5.There are 10 blue crayons and 4 yellow crayons. How many crayons are there in all?
  6. 6.1 + ? = 4
  7. 7.7 + 12 =
  8. 8.7 + ? = 10
  9. 9.Nisha has 3 laddoos and gets 6 laddoos more. How many laddoos does Nisha have now?
  10. 10.There are 3 green flowers and 13 red flowers. How many flowers are there in all?
  11. 11.8 + 9 =
  12. 12.There are 8 blue balls and 3 green balls. How many balls are there in all?
  13. 13.3 + 13 =
  14. 14.Nisha has 10 mangoes and gets 2 mangoes more. How many mangoes does Nisha have now?
  15. 15.1 + 2 + 9 =
  16. 16.There are 11 blue balls and 9 yellow balls. How many balls are there in all?
  17. 17.13 + ? = 18
  18. 18.Sneha has 15 marbles and gets 1 marble more. How many marbles does Sneha have now?
  19. 19.5 + ? = 8
  20. 20.? + 3 = 11
  21. 21.Zoya has 8 crayons and gets 10 crayons more. How many crayons does Zoya have now?
  22. 22.Tara has 11 balls and gets 9 balls more. How many balls does Tara have now?
  23. 23.1 + ? = 7
  24. 24.Kabir has 13 mangoes and gets 1 mango more. How many mangoes does Kabir have now?
  25. 25.8 + 2 + 8 =
  26. 26.There are 5 green crayons and 5 red crayons. How many crayons are there in all?
  27. 27.Saanvi has 6 balls and gets 7 balls more. How many balls does Saanvi have now?
  28. 28.Manav has 8 pencils and gets 6 pencils more. How many pencils does Manav have now?
  29. 29.There are 2 red balloons and 3 white balloons. How many balloons are there in all?
  30. 30.4 + ? = 8
  31. 31.Ananya has 15 balls and gets 4 balls more. How many balls does Ananya have now?
  32. 32.9 + 5 =
  33. 33.5 + 8 + 2 =
  34. 34.1 + 3 + 8 =
  35. 35.Meera has 10 kites and gets 1 kite more. How many kites does Meera have now?
  36. 36.There are 4 blue crayons and 2 yellow crayons. How many crayons are there in all?
  37. 37.There are 12 red beads and 5 white beads. How many beads are there in all?
  38. 38.2 + ? = 6
  39. 39.Diya has 7 flowers and gets 9 flowers more. How many flowers does Diya have now?
  40. 40.4 + 4 =

Answer key

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

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