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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 705 · 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. 1.8 + 6 + 1 =
  2. 2.There are 10 pink flowers and 10 white flowers. How many flowers are there in all?
  3. 3.Farhan has 5 shells and gets 9 shells more. How many shells does Farhan have now?
  4. 4.Pooja has 14 mangoes and gets 1 mango more. How many mangoes does Pooja have now?
  5. 5.Dev has 15 mangoes and gets 2 mangoes more. How many mangoes does Dev have now?
  6. 6.There are 12 blue balls and 5 red balls. How many balls are there in all?
  7. 7.? + 4 = 8
  8. 8.8 + 4 + 5 =
  9. 9.Farhan has 5 balloons and gets 13 balloons more. How many balloons does Farhan have now?
  10. 10.5 + 8 + 7 =
  11. 11.? + 3 = 9
  12. 12.Priya has 14 pencils and gets 2 pencils more. How many pencils does Priya have now?
  13. 13.Meera has 9 flowers and gets 3 flowers more. How many flowers does Meera have now?
  14. 14.Tara has 8 flowers and gets 1 flower more. How many flowers does Tara have now?
  15. 15.Ishaan has 5 shells and gets 10 shells more. How many shells does Ishaan have now?
  16. 16.Saanvi has 7 bananas and gets 3 bananas more. How many bananas does Saanvi have now?
  17. 17.There are 10 red flowers and 7 white flowers. How many flowers are there in all?
  18. 18.4 + 1 =
  19. 19.Diya has 5 shells and gets 13 shells more. How many shells does Diya have now?
  20. 20.1 + 2 + 3 =
  21. 21.7 + 2 + 9 =
  22. 22.4 + 8 + 5 =
  23. 23.16 + 3 =
  24. 24.7 + 7 + 3 =
  25. 25.There are 8 white flowers and 2 red flowers. How many flowers are there in all?
  26. 26.7 + 7 + 2 =
  27. 27.3 + 9 =
  28. 28.2 + 6 + 7 =
  29. 29.There are 10 blue crayons and 9 pink crayons. How many crayons are there in all?
  30. 30.Isha has 2 laddoos and gets 3 laddoos more. How many laddoos does Isha have now?
  31. 31.There are 9 yellow balloons and 9 red balloons. How many balloons are there in all?
  32. 32.There are 2 green beads and 18 red beads. How many beads are there in all?
  33. 33.5 + 15 =
  34. 34.11 + 8 =
  35. 35.9 + 11 =
  36. 36.? + 3 = 6
  37. 37.5 + 4 + 4 =
  38. 38.7 + 2 + 6 =
  39. 39.Rahul has 7 crayons and gets 8 crayons more. How many crayons does Rahul have now?
  40. 40.There are 2 blue crayons and 5 green crayons. How many crayons are there in all?

Answer key

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

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