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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 792 · 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. 1.9 + 2 =
  2. 2.11 + 8 =
  3. 3.Nisha has 15 kites and gets 4 kites more. How many kites does Nisha have now?
  4. 4.Kavya has 3 balls and gets 14 balls more. How many balls does Kavya have now?
  5. 5.Priya has 4 marbles and gets 14 marbles more. How many marbles does Priya have now?
  6. 6.4 + 1 =
  7. 7.2 + 4 + 13 =
  8. 8.? + 4 = 5
  9. 9.1 + ? = 3
  10. 10.There are 6 yellow crayons and 4 pink crayons. How many crayons are there in all?
  11. 11.5 + 10 =
  12. 12.13 + ? = 15
  13. 13.7 + 8 + 3 =
  14. 14.There are 4 red balls and 10 yellow balls. How many balls are there in all?
  15. 15.4 + 5 =
  16. 16.19 + 1 =
  17. 17.6 + 12 =
  18. 18.There are 10 yellow beads and 2 red beads. How many beads are there in all?
  19. 19.There are 11 red beads and 6 white beads. How many beads are there in all?
  20. 20.There are 2 red beads and 8 pink beads. How many beads are there in all?
  21. 21.Arjun has 6 books and gets 12 books more. How many books does Arjun have now?
  22. 22.There are 11 green balloons and 4 yellow balloons. How many balloons are there in all?
  23. 23.Vivaan has 12 balls and gets 2 balls more. How many balls does Vivaan have now?
  24. 24.7 + 4 + 9 =
  25. 25.There are 9 red balloons and 2 white balloons. How many balloons are there in all?
  26. 26.2 + 18 =
  27. 27.5 + ? = 6
  28. 28.There are 8 green balloons and 10 blue balloons. How many balloons are there in all?
  29. 29.5 + 15 =
  30. 30.Rahul has 13 shells and gets 7 shells more. How many shells does Rahul have now?
  31. 31.There are 2 pink balloons and 8 red balloons. How many balloons are there in all?
  32. 32.10 + ? = 17
  33. 33.8 + 3 =
  34. 34.2 + ? = 6
  35. 35.There are 4 yellow flowers and 14 red flowers. How many flowers are there in all?
  36. 36.2 + ? = 4
  37. 37.? + 7 = 12
  38. 38.There are 2 red balls and 4 blue balls. How many balls are there in all?
  39. 39.Rohan has 14 books and gets 3 books more. How many books does Rohan have now?
  40. 40.Dev has 3 balls and gets 14 balls more. How many balls does Dev have now?

Answer key

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

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