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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 353 · 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. 1.17 + 3 =
  2. 2.6 + 4 + 9 =
  3. 3.8 + 2 + 9 =
  4. 4.5 + 3 + 3 =
  5. 5.There are 6 blue balloons and 14 green balloons. How many balloons are there in all?
  6. 6.Vivaan has 2 bananas and gets 17 bananas more. How many bananas does Vivaan have now?
  7. 7.Vivaan has 2 books and gets 10 books more. How many books does Vivaan have now?
  8. 8.There are 11 blue balls and 7 yellow balls. How many balls are there in all?
  9. 9.There are 3 yellow kites and 14 white kites. How many kites are there in all?
  10. 10.Gurpreet has 10 pencils and gets 2 pencils more. How many pencils does Gurpreet have now?
  11. 11.19 + 1 =
  12. 12.8 + 2 + 3 =
  13. 13.2 + 3 + 7 =
  14. 14.1 + 6 =
  15. 15.1 + 13 =
  16. 16.3 + ? = 5
  17. 17.? + 8 = 9
  18. 18.Ananya has 3 pencils and gets 11 pencils more. How many pencils does Ananya have now?
  19. 19.There are 7 blue beads and 7 white beads. How many beads are there in all?
  20. 20.2 + ? = 17
  21. 21.There are 2 red balloons and 15 green balloons. How many balloons are there in all?
  22. 22.1 + ? = 14
  23. 23.5 + 6 =
  24. 24.There are 12 blue crayons and 7 white crayons. How many crayons are there in all?
  25. 25.2 + 5 + 11 =
  26. 26.1 + 6 + 10 =
  27. 27.There are 8 yellow flowers and 10 blue flowers. How many flowers are there in all?
  28. 28.Pooja has 11 flowers and gets 8 flowers more. How many flowers does Pooja have now?
  29. 29.5 + 6 + 3 =
  30. 30.Kabir has 9 pencils and gets 11 pencils more. How many pencils does Kabir have now?
  31. 31.There are 8 white balloons and 10 pink balloons. How many balloons are there in all?
  32. 32.Vivaan has 11 pencils and gets 8 pencils more. How many pencils does Vivaan have now?
  33. 33.4 + ? = 16
  34. 34.Aditya has 14 mangoes and gets 5 mangoes more. How many mangoes does Aditya have now?
  35. 35.Pooja has 3 pencils and gets 13 pencils more. How many pencils does Pooja have now?
  36. 36.There are 3 white crayons and 3 blue crayons. How many crayons are there in all?
  37. 37.5 + ? = 9
  38. 38.7 + 8 =
  39. 39.2 + 10 =
  40. 40.There are 3 white flowers and 16 red flowers. How many flowers are there in all?

Answer key

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

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