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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 435 · 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 + 1 + 3 =
  2. 2.There are 3 green kites and 3 white kites. How many kites are there in all?
  3. 3.4 + 13 =
  4. 4.Kabir has 4 pencils and gets 2 pencils more. How many pencils does Kabir have now?
  5. 5.9 + 3 =
  6. 6.10 + 9 =
  7. 7.7 + 6 + 3 =
  8. 8.5 + 2 =
  9. 9.18 + 1 =
  10. 10.Kabir has 9 balls and gets 11 balls more. How many balls does Kabir have now?
  11. 11.5 + ? = 7
  12. 12.5 + 5 + 2 =
  13. 13.Aditya has 5 pencils and gets 3 pencils more. How many pencils does Aditya have now?
  14. 14.There are 10 green crayons and 4 blue crayons. How many crayons are there in all?
  15. 15.There are 3 yellow crayons and 14 green crayons. How many crayons are there in all?
  16. 16.? + 1 = 5
  17. 17.3 + 7 + 7 =
  18. 18.3 + 6 =
  19. 19.There are 6 red crayons and 2 yellow crayons. How many crayons are there in all?
  20. 20.There are 7 yellow flowers and 4 blue flowers. How many flowers are there in all?
  21. 21.Arjun has 4 kites and gets 4 kites more. How many kites does Arjun have now?
  22. 22.Karan has 15 marbles and gets 2 marbles more. How many marbles does Karan have now?
  23. 23.There are 4 red balloons and 10 white balloons. How many balloons are there in all?
  24. 24.There are 2 white balloons and 16 red balloons. How many balloons are there in all?
  25. 25.There are 2 pink crayons and 11 yellow crayons. How many crayons are there in all?
  26. 26.Dev has 12 books and gets 2 books more. How many books does Dev have now?
  27. 27.? + 6 = 14
  28. 28.Diya has 4 flowers and gets 14 flowers more. How many flowers does Diya have now?
  29. 29.Sneha has 7 bananas and gets 2 bananas more. How many bananas does Sneha have now?
  30. 30.10 + 1 =
  31. 31.Arjun has 7 kites and gets 3 kites more. How many kites does Arjun have now?
  32. 32.6 + 3 + 3 =
  33. 33.3 + 1 + 4 =
  34. 34.1 + 5 + 3 =
  35. 35.1 + 3 =
  36. 36.10 + 2 =
  37. 37.1 + 8 + 3 =
  38. 38.5 + 10 =
  39. 39.16 + ? = 20
  40. 40.1 + 4 + 10 =

Answer key

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

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