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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 241 · 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. 1.5 + ? = 6
  2. 2.1 + 3 + 12 =
  3. 3.Vivaan has 12 shells and gets 1 shell more. How many shells does Vivaan have now?
  4. 4.? + 3 = 7
  5. 5.3 + 12 =
  6. 6.4 + ? = 6
  7. 7.Pooja has 15 flowers and gets 3 flowers more. How many flowers does Pooja have now?
  8. 8.Dev has 8 bananas and gets 11 bananas more. How many bananas does Dev have now?
  9. 9.11 + 7 =
  10. 10.19 + 1 =
  11. 11.6 + 7 =
  12. 12.Rohan has 6 books and gets 2 books more. How many books does Rohan have now?
  13. 13.1 + 13 =
  14. 14.4 + ? = 5
  15. 15.2 + 3 + 5 =
  16. 16.Saanvi has 3 marbles and gets 3 marbles more. How many marbles does Saanvi have now?
  17. 17.9 + 10 =
  18. 18.There are 5 red beads and 11 yellow beads. How many beads are there in all?
  19. 19.Priya has 10 marbles and gets 3 marbles more. How many marbles does Priya have now?
  20. 20.5 + 4 + 5 =
  21. 21.3 + 8 + 6 =
  22. 22.2 + 5 + 6 =
  23. 23.? + 1 = 18
  24. 24.There are 3 blue flowers and 10 pink flowers. How many flowers are there in all?
  25. 25.? + 4 = 7
  26. 26.There are 5 pink kites and 10 red kites. How many kites are there in all?
  27. 27.5 + 7 + 6 =
  28. 28.Karan has 13 balloons and gets 7 balloons more. How many balloons does Karan have now?
  29. 29.2 + 1 + 16 =
  30. 30.Priya has 2 flowers and gets 17 flowers more. How many flowers does Priya have now?
  31. 31.5 + 7 =
  32. 32.4 + 2 + 5 =
  33. 33.6 + 9 =
  34. 34.12 + 5 =
  35. 35.Zoya has 6 crayons and gets 3 crayons more. How many crayons does Zoya have now?
  36. 36.Karan has 9 flowers and gets 1 flower more. How many flowers does Karan have now?
  37. 37.Kabir has 10 kites and gets 4 kites more. How many kites does Kabir have now?
  38. 38.4 + 2 + 1 =
  39. 39.? + 3 = 16
  40. 40.8 + 1 + 11 =

Answer key

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

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