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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 180 · 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. 1.14 + 4 =
  2. 2.There are 3 yellow balls and 2 red balls. How many balls are there in all?
  3. 3.? + 4 = 6
  4. 4.2 + 3 + 14 =
  5. 5.15 + 1 =
  6. 6.4 + 1 + 12 =
  7. 7.There are 11 white kites and 5 red kites. How many kites are there in all?
  8. 8.8 + 3 + 7 =
  9. 9.16 + 2 =
  10. 10.2 + 8 + 5 =
  11. 11.There are 11 white balls and 7 blue balls. How many balls are there in all?
  12. 12.There are 10 blue balloons and 5 pink balloons. How many balloons are there in all?
  13. 13.There are 2 green beads and 12 red beads. How many beads are there in all?
  14. 14.Isha has 8 bananas and gets 3 bananas more. How many bananas does Isha have now?
  15. 15.4 + ? = 10
  16. 16.8 + 10 =
  17. 17.Zoya has 11 flowers and gets 9 flowers more. How many flowers does Zoya have now?
  18. 18.1 + ? = 10
  19. 19.3 + 17 =
  20. 20.There are 6 white crayons and 12 pink crayons. How many crayons are there in all?
  21. 21.? + 2 = 19
  22. 22.Dev has 3 pencils and gets 12 pencils more. How many pencils does Dev have now?
  23. 23.Aditya has 6 mangoes and gets 11 mangoes more. How many mangoes does Aditya have now?
  24. 24.2 + 4 =
  25. 25.Farhan has 3 marbles and gets 6 marbles more. How many marbles does Farhan have now?
  26. 26.Gurpreet has 14 marbles and gets 3 marbles more. How many marbles does Gurpreet have now?
  27. 27.16 + 1 =
  28. 28.? + 6 = 9
  29. 29.There are 12 pink crayons and 5 blue crayons. How many crayons are there in all?
  30. 30.5 + 12 =
  31. 31.2 + 7 + 1 =
  32. 32.? + 10 = 12
  33. 33.There are 5 blue kites and 15 red kites. How many kites are there in all?
  34. 34.There are 10 yellow balls and 4 white balls. How many balls are there in all?
  35. 35.Riya has 9 bananas and gets 11 bananas more. How many bananas does Riya have now?
  36. 36.1 + 4 + 10 =
  37. 37.19 + 1 =
  38. 38.2 + ? = 8
  39. 39.? + 5 = 7
  40. 40.10 + 2 =

Answer key

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

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