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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 547 · 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. 1.7 + 6 + 4 =
  2. 2.1 + 14 =
  3. 3.There are 3 red balls and 14 blue balls. How many balls are there in all?
  4. 4.3 + ? = 16
  5. 5.There are 7 white flowers and 9 blue flowers. How many flowers are there in all?
  6. 6.2 + ? = 14
  7. 7.7 + 4 =
  8. 8.There are 5 green crayons and 4 blue crayons. How many crayons are there in all?
  9. 9.There are 3 blue flowers and 12 white flowers. How many flowers are there in all?
  10. 10.6 + 4 + 1 =
  11. 11.14 + 3 =
  12. 12.14 + 4 =
  13. 13.Ananya has 15 bananas and gets 4 bananas more. How many bananas does Ananya have now?
  14. 14.14 + ? = 19
  15. 15.There are 3 white crayons and 15 pink crayons. How many crayons are there in all?
  16. 16.2 + 3 + 3 =
  17. 17.There are 4 red balloons and 15 blue balloons. How many balloons are there in all?
  18. 18.? + 2 = 6
  19. 19.5 + 4 =
  20. 20.There are 10 red balloons and 5 yellow balloons. How many balloons are there in all?
  21. 21.Arjun has 4 mangoes and gets 9 mangoes more. How many mangoes does Arjun have now?
  22. 22.6 + 7 + 2 =
  23. 23.1 + ? = 4
  24. 24.3 + ? = 8
  25. 25.There are 7 green balloons and 8 white balloons. How many balloons are there in all?
  26. 26.There are 11 white balloons and 5 blue balloons. How many balloons are there in all?
  27. 27.There are 11 pink balloons and 7 white balloons. How many balloons are there in all?
  28. 28.? + 6 = 7
  29. 29.There are 6 green balls and 13 blue balls. How many balls are there in all?
  30. 30.There are 9 green beads and 5 yellow beads. How many beads are there in all?
  31. 31.Kabir has 12 laddoos and gets 7 laddoos more. How many laddoos does Kabir have now?
  32. 32.3 + 1 + 1 =
  33. 33.Priya has 10 mangoes and gets 1 mango more. How many mangoes does Priya have now?
  34. 34.Isha has 9 kites and gets 8 kites more. How many kites does Isha have now?
  35. 35.19 + 1 =
  36. 36.5 + 3 =
  37. 37.17 + 3 =
  38. 38.There are 3 green balls and 3 red balls. How many balls are there in all?
  39. 39.Farhan has 7 shells and gets 9 shells more. How many shells does Farhan have now?
  40. 40.? + 1 = 19

Answer key

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

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