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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 50 · 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 + 6 + 13 =
  2. 2.? + 7 = 18
  3. 3.There are 8 red flowers and 2 green flowers. How many flowers are there in all?
  4. 4.5 + 1 + 2 =
  5. 5.There are 2 yellow balloons and 5 white balloons. How many balloons are there in all?
  6. 6.12 + 2 =
  7. 7.10 + 9 =
  8. 8.8 + ? = 10
  9. 9.Pooja has 7 kites and gets 2 kites more. How many kites does Pooja have now?
  10. 10.There are 4 blue beads and 9 white beads. How many beads are there in all?
  11. 11.1 + 2 + 15 =
  12. 12.6 + 5 =
  13. 13.Arjun has 2 mangoes and gets 11 mangoes more. How many mangoes does Arjun have now?
  14. 14.There are 9 yellow beads and 8 pink beads. How many beads are there in all?
  15. 15.There are 12 yellow balloons and 2 red balloons. How many balloons are there in all?
  16. 16.? + 1 = 20
  17. 17.16 + 1 =
  18. 18.There are 3 blue balloons and 11 red balloons. How many balloons are there in all?
  19. 19.There are 8 pink balloons and 8 white balloons. How many balloons are there in all?
  20. 20.Rahul has 13 balls and gets 7 balls more. How many balls does Rahul have now?
  21. 21.4 + 5 =
  22. 22.There are 4 pink crayons and 11 yellow crayons. How many crayons are there in all?
  23. 23.There are 8 blue flowers and 4 green flowers. How many flowers are there in all?
  24. 24.2 + 2 =
  25. 25.Dev has 7 balloons and gets 12 balloons more. How many balloons does Dev have now?
  26. 26.Meera has 8 balloons and gets 7 balloons more. How many balloons does Meera have now?
  27. 27.Ishaan has 3 pencils and gets 10 pencils more. How many pencils does Ishaan have now?
  28. 28.6 + 1 + 12 =
  29. 29.7 + 6 + 5 =
  30. 30.Gurpreet has 13 mangoes and gets 3 mangoes more. How many mangoes does Gurpreet have now?
  31. 31.Diya has 2 marbles and gets 7 marbles more. How many marbles does Diya have now?
  32. 32.3 + ? = 20
  33. 33.There are 9 green crayons and 4 white crayons. How many crayons are there in all?
  34. 34.5 + 4 + 5 =
  35. 35.13 + 4 =
  36. 36.There are 9 white beads and 6 blue beads. How many beads are there in all?
  37. 37.4 + 1 + 5 =
  38. 38.There are 7 pink balloons and 8 white balloons. How many balloons are there in all?
  39. 39.There are 3 white balls and 7 pink balls. How many balls are there in all?
  40. 40.8 + ? = 15

Answer key

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

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