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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 465 · 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.Dev has 3 pencils and gets 4 pencils more. How many pencils does Dev have now?
  2. 2.There are 11 blue balloons and 2 red balloons. How many balloons are there in all?
  3. 3.5 + ? = 10
  4. 4.9 + 2 =
  5. 5.There are 8 pink balls and 10 blue balls. How many balls are there in all?
  6. 6.7 + 2 + 2 =
  7. 7.2 + 2 + 8 =
  8. 8.? + 8 = 14
  9. 9.9 + 3 =
  10. 10.Meera has 15 crayons and gets 2 crayons more. How many crayons does Meera have now?
  11. 11.? + 6 = 8
  12. 12.There are 4 yellow beads and 7 white beads. How many beads are there in all?
  13. 13.? + 7 = 13
  14. 14.Sneha has 9 balls and gets 4 balls more. How many balls does Sneha have now?
  15. 15.There are 5 red balloons and 2 blue balloons. How many balloons are there in all?
  16. 16.There are 2 blue balls and 4 pink balls. How many balls are there in all?
  17. 17.Diya has 9 shells and gets 9 shells more. How many shells does Diya have now?
  18. 18.4 + 7 + 7 =
  19. 19.16 + 4 =
  20. 20.7 + 8 + 2 =
  21. 21.Dev has 7 marbles and gets 5 marbles more. How many marbles does Dev have now?
  22. 22.4 + 1 =
  23. 23.Rohan has 10 mangoes and gets 3 mangoes more. How many mangoes does Rohan have now?
  24. 24.There are 7 red kites and 11 yellow kites. How many kites are there in all?
  25. 25.1 + 6 + 5 =
  26. 26.? + 6 = 16
  27. 27.There are 3 pink crayons and 6 green crayons. How many crayons are there in all?
  28. 28.7 + 2 =
  29. 29.There are 2 blue balloons and 6 yellow balloons. How many balloons are there in all?
  30. 30.There are 2 white balloons and 6 pink balloons. How many balloons are there in all?
  31. 31.Arjun has 14 kites and gets 1 kite more. How many kites does Arjun have now?
  32. 32.3 + ? = 4
  33. 33.There are 8 pink balloons and 10 red balloons. How many balloons are there in all?
  34. 34.There are 9 pink beads and 3 blue beads. How many beads are there in all?
  35. 35.14 + 4 =
  36. 36.Karan has 8 books and gets 2 books more. How many books does Karan have now?
  37. 37.There are 10 yellow flowers and 8 blue flowers. How many flowers are there in all?
  38. 38.? + 12 = 17
  39. 39.Kavya has 8 flowers and gets 8 flowers more. How many flowers does Kavya have now?
  40. 40.There are 3 red beads and 2 blue beads. How many beads are there in all?

Answer key

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

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