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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 586 · 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 + 2 + 2 =
  2. 2.6 + 1 =
  3. 3.4 + 7 + 7 =
  4. 4.3 + 4 + 3 =
  5. 5.7 + 3 =
  6. 6.Rahul has 11 shells and gets 3 shells more. How many shells does Rahul have now?
  7. 7.2 + 4 + 6 =
  8. 8.4 + 2 + 7 =
  9. 9.1 + 4 + 2 =
  10. 10.4 + ? = 5
  11. 11.Zoya has 9 flowers and gets 8 flowers more. How many flowers does Zoya have now?
  12. 12.8 + 1 + 1 =
  13. 13.6 + 3 + 11 =
  14. 14.Diya has 6 crayons and gets 7 crayons more. How many crayons does Diya have now?
  15. 15.5 + 2 =
  16. 16.7 + 1 + 1 =
  17. 17.? + 5 = 10
  18. 18.1 + 2 + 17 =
  19. 19.There are 12 white kites and 3 pink kites. How many kites are there in all?
  20. 20.Vivaan has 14 shells and gets 5 shells more. How many shells does Vivaan have now?
  21. 21.There are 6 red crayons and 3 green crayons. How many crayons are there in all?
  22. 22.5 + 6 =
  23. 23.Ishaan has 7 books and gets 12 books more. How many books does Ishaan have now?
  24. 24.6 + 1 + 7 =
  25. 25.There are 6 blue crayons and 8 green crayons. How many crayons are there in all?
  26. 26.15 + 1 =
  27. 27.There are 6 red flowers and 10 yellow flowers. How many flowers are there in all?
  28. 28.? + 12 = 19
  29. 29.Pooja has 9 bananas and gets 10 bananas more. How many bananas does Pooja have now?
  30. 30.? + 8 = 17
  31. 31.There are 6 yellow balls and 13 pink balls. How many balls are there in all?
  32. 32.? + 1 = 3
  33. 33.1 + 6 + 4 =
  34. 34.3 + ? = 6
  35. 35.Lakshmi has 5 crayons and gets 8 crayons more. How many crayons does Lakshmi have now?
  36. 36.14 + 3 =
  37. 37.Sneha has 3 flowers and gets 15 flowers more. How many flowers does Sneha have now?
  38. 38.? + 1 = 9
  39. 39.? + 3 = 12
  40. 40.19 + 1 =

Answer key

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

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