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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 309 · 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.There are 4 blue flowers and 8 pink flowers. How many flowers are there in all?
  2. 2.There are 8 green balls and 3 red balls. How many balls are there in all?
  3. 3.8 + ? = 19
  4. 4.4 + 8 =
  5. 5.Diya has 14 bananas and gets 3 bananas more. How many bananas does Diya have now?
  6. 6.17 + 3 =
  7. 7.There are 4 pink balloons and 9 white balloons. How many balloons are there in all?
  8. 8.There are 4 yellow flowers and 8 pink flowers. How many flowers are there in all?
  9. 9.1 + 6 + 13 =
  10. 10.Arjun has 6 flowers and gets 7 flowers more. How many flowers does Arjun have now?
  11. 11.3 + 1 =
  12. 12.3 + ? = 12
  13. 13.1 + 3 + 16 =
  14. 14.There are 3 blue flowers and 15 pink flowers. How many flowers are there in all?
  15. 15.Ishaan has 2 mangoes and gets 11 mangoes more. How many mangoes does Ishaan have now?
  16. 16.? + 6 = 14
  17. 17.? + 3 = 6
  18. 18.2 + ? = 6
  19. 19.18 + 1 =
  20. 20.5 + 6 + 2 =
  21. 21.4 + 8 + 5 =
  22. 22.19 + 1 =
  23. 23.2 + ? = 4
  24. 24.1 + ? = 4
  25. 25.Priya has 13 books and gets 4 books more. How many books does Priya have now?
  26. 26.8 + 2 + 9 =
  27. 27.Dev has 14 bananas and gets 4 bananas more. How many bananas does Dev have now?
  28. 28.3 + 8 =
  29. 29.Ananya has 5 pencils and gets 6 pencils more. How many pencils does Ananya have now?
  30. 30.There are 8 blue balloons and 3 white balloons. How many balloons are there in all?
  31. 31.5 + 7 + 7 =
  32. 32.Pooja has 6 shells and gets 11 shells more. How many shells does Pooja have now?
  33. 33.? + 2 = 12
  34. 34.3 + ? = 5
  35. 35.? + 2 = 7
  36. 36.4 + 4 + 5 =
  37. 37.There are 10 white balloons and 4 green balloons. How many balloons are there in all?
  38. 38.There are 10 pink crayons and 3 blue crayons. How many crayons are there in all?
  39. 39.There are 8 white balloons and 5 pink balloons. How many balloons are there in all?
  40. 40.There are 9 yellow balls and 4 blue balls. How many balls are there in all?

Answer key

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

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