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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 708 · 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.Isha has 5 mangoes and gets 5 mangoes more. How many mangoes does Isha have now?
  2. 2.1 + 10 =
  3. 3.4 + 5 + 5 =
  4. 4.6 + 5 + 3 =
  5. 5.2 + 3 + 8 =
  6. 6.? + 7 = 10
  7. 7.There are 2 pink beads and 7 green beads. How many beads are there in all?
  8. 8.Isha has 2 laddoos and gets 2 laddoos more. How many laddoos does Isha have now?
  9. 9.15 + 1 =
  10. 10.Ishaan has 7 mangoes and gets 7 mangoes more. How many mangoes does Ishaan have now?
  11. 11.3 + 1 + 2 =
  12. 12.8 + 2 + 6 =
  13. 13.7 + 4 =
  14. 14.2 + ? = 3
  15. 15.16 + ? = 17
  16. 16.There are 5 pink balls and 2 blue balls. How many balls are there in all?
  17. 17.7 + 4 + 9 =
  18. 18.There are 10 pink balloons and 6 green balloons. How many balloons are there in all?
  19. 19.Riya has 6 balloons and gets 6 balloons more. How many balloons does Riya have now?
  20. 20.4 + ? = 5
  21. 21.Rahul has 14 crayons and gets 5 crayons more. How many crayons does Rahul have now?
  22. 22.Arjun has 8 mangoes and gets 3 mangoes more. How many mangoes does Arjun have now?
  23. 23.15 + ? = 17
  24. 24.There are 9 pink balloons and 8 yellow balloons. How many balloons are there in all?
  25. 25.Kabir has 12 pencils and gets 4 pencils more. How many pencils does Kabir have now?
  26. 26.1 + ? = 12
  27. 27.Karan has 7 flowers and gets 4 flowers more. How many flowers does Karan have now?
  28. 28.Ishaan has 15 balls and gets 2 balls more. How many balls does Ishaan have now?
  29. 29.8 + 1 =
  30. 30.6 + 13 =
  31. 31.Saanvi has 2 bananas and gets 16 bananas more. How many bananas does Saanvi have now?
  32. 32.Gurpreet has 13 marbles and gets 1 marble more. How many marbles does Gurpreet have now?
  33. 33.Isha has 5 laddoos and gets 9 laddoos more. How many laddoos does Isha have now?
  34. 34.Manav has 15 flowers and gets 4 flowers more. How many flowers does Manav have now?
  35. 35.5 + 5 + 2 =
  36. 36.7 + ? = 20
  37. 37.2 + 2 + 16 =
  38. 38.1 + 17 =
  39. 39.? + 2 = 11
  40. 40.There are 7 red crayons and 12 green crayons. How many crayons are there in all?

Answer key

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

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