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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 158 · 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 11 red balloons and 3 white balloons. How many balloons are there in all?
  2. 2.7 + 5 =
  3. 3.11 + 7 =
  4. 4.3 + 6 =
  5. 5.Ananya has 3 shells and gets 11 shells more. How many shells does Ananya have now?
  6. 6.18 + 1 =
  7. 7.6 + ? = 15
  8. 8.9 + 8 =
  9. 9.2 + 1 + 14 =
  10. 10.Riya has 5 balloons and gets 4 balloons more. How many balloons does Riya have now?
  11. 11.? + 2 = 4
  12. 12.Isha has 8 balls and gets 12 balls more. How many balls does Isha have now?
  13. 13.5 + 6 + 7 =
  14. 14.14 + ? = 15
  15. 15.7 + 1 =
  16. 16.5 + 3 + 3 =
  17. 17.14 + 3 =
  18. 18.There are 3 red flowers and 13 yellow flowers. How many flowers are there in all?
  19. 19.Kabir has 13 pencils and gets 5 pencils more. How many pencils does Kabir have now?
  20. 20.There are 3 blue balloons and 13 red balloons. How many balloons are there in all?
  21. 21.13 + 6 =
  22. 22.13 + 5 =
  23. 23.Priya has 5 laddoos and gets 6 laddoos more. How many laddoos does Priya have now?
  24. 24.There are 7 blue kites and 10 pink kites. How many kites are there in all?
  25. 25.2 + ? = 3
  26. 26.10 + 4 =
  27. 27.3 + 3 + 5 =
  28. 28.Zoya has 9 bananas and gets 2 bananas more. How many bananas does Zoya have now?
  29. 29.5 + ? = 11
  30. 30.12 + ? = 17
  31. 31.4 + 4 + 3 =
  32. 32.Isha has 13 balloons and gets 3 balloons more. How many balloons does Isha have now?
  33. 33.Joseph has 12 mangoes and gets 8 mangoes more. How many mangoes does Joseph have now?
  34. 34.2 + 12 =
  35. 35.2 + 4 + 6 =
  36. 36.Rahul has 11 kites and gets 3 kites more. How many kites does Rahul have now?
  37. 37.There are 10 white balls and 5 red balls. How many balls are there in all?
  38. 38.5 + 1 + 8 =
  39. 39.2 + 9 =
  40. 40.There are 12 red flowers and 5 yellow flowers. How many flowers are there in all?

Answer key

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

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