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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 899 · 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.? + 1 = 16
  2. 2.18 + 2 =
  3. 3.Kavya has 8 books and gets 7 books more. How many books does Kavya have now?
  4. 4.There are 10 blue crayons and 2 yellow crayons. How many crayons are there in all?
  5. 5.Diya has 11 books and gets 4 books more. How many books does Diya have now?
  6. 6.1 + 11 =
  7. 7.There are 5 white crayons and 14 blue crayons. How many crayons are there in all?
  8. 8.3 + ? = 5
  9. 9.3 + 2 =
  10. 10.6 + ? = 8
  11. 11.6 + 6 + 5 =
  12. 12.1 + 15 =
  13. 13.Priya has 12 kites and gets 7 kites more. How many kites does Priya have now?
  14. 14.7 + 2 + 2 =
  15. 15.There are 4 pink balls and 13 blue balls. How many balls are there in all?
  16. 16.8 + 6 + 6 =
  17. 17.There are 4 pink flowers and 13 yellow flowers. How many flowers are there in all?
  18. 18.4 + 6 =
  19. 19.1 + 6 + 11 =
  20. 20.7 + 1 + 4 =
  21. 21.1 + 8 + 9 =
  22. 22.There are 12 green crayons and 3 red crayons. How many crayons are there in all?
  23. 23.4 + ? = 10
  24. 24.There are 11 pink kites and 5 blue kites. How many kites are there in all?
  25. 25.There are 7 yellow beads and 9 white beads. How many beads are there in all?
  26. 26.Lakshmi has 3 mangoes and gets 7 mangoes more. How many mangoes does Lakshmi have now?
  27. 27.Kavya has 9 shells and gets 8 shells more. How many shells does Kavya have now?
  28. 28.There are 4 blue flowers and 3 pink flowers. How many flowers are there in all?
  29. 29.There are 3 red balls and 8 white balls. How many balls are there in all?
  30. 30.? + 6 = 11
  31. 31.Aarav has 3 pencils and gets 12 pencils more. How many pencils does Aarav have now?
  32. 32.1 + 1 + 7 =
  33. 33.7 + 8 + 1 =
  34. 34.Ishaan has 15 pencils and gets 5 pencils more. How many pencils does Ishaan have now?
  35. 35.12 + ? = 18
  36. 36.? + 3 = 8
  37. 37.Isha has 2 marbles and gets 12 marbles more. How many marbles does Isha have now?
  38. 38.3 + ? = 8
  39. 39.There are 6 green balloons and 12 white balloons. How many balloons are there in all?
  40. 40.15 + 5 =

Answer key

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

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