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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 742 · 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. 1.2 + ? = 12
  2. 2.Meera has 7 crayons and gets 3 crayons more. How many crayons does Meera have now?
  3. 3.16 + 2 =
  4. 4.7 + 6 + 1 =
  5. 5.2 + 2 + 5 =
  6. 6.Rahul has 15 shells and gets 1 shell more. How many shells does Rahul have now?
  7. 7.There are 11 pink kites and 8 green kites. How many kites are there in all?
  8. 8.There are 3 white crayons and 2 blue crayons. How many crayons are there in all?
  9. 9.Zoya has 14 mangoes and gets 4 mangoes more. How many mangoes does Zoya have now?
  10. 10.8 + 2 + 1 =
  11. 11.Sneha has 4 balls and gets 5 balls more. How many balls does Sneha have now?
  12. 12.7 + 1 + 12 =
  13. 13.7 + 1 + 10 =
  14. 14.1 + 7 =
  15. 15.Saanvi has 7 shells and gets 12 shells more. How many shells does Saanvi have now?
  16. 16.3 + 8 + 1 =
  17. 17.10 + ? = 16
  18. 18.Nisha has 10 marbles and gets 4 marbles more. How many marbles does Nisha have now?
  19. 19.Zoya has 7 kites and gets 1 kite more. How many kites does Zoya have now?
  20. 20.6 + 7 + 5 =
  21. 21.2 + 8 + 7 =
  22. 22.1 + 8 + 1 =
  23. 23.There are 3 yellow beads and 15 white beads. How many beads are there in all?
  24. 24.6 + 4 + 5 =
  25. 25.15 + 1 =
  26. 26.5 + 4 + 6 =
  27. 27.There are 9 yellow crayons and 4 white crayons. How many crayons are there in all?
  28. 28.Riya has 6 pencils and gets 8 pencils more. How many pencils does Riya have now?
  29. 29.7 + 4 + 2 =
  30. 30.10 + 4 =
  31. 31.4 + 3 + 8 =
  32. 32.3 + 16 =
  33. 33.1 + ? = 3
  34. 34.1 + ? = 9
  35. 35.Manav has 5 balloons and gets 14 balloons more. How many balloons does Manav have now?
  36. 36.16 + 4 =
  37. 37.There are 3 red kites and 13 pink kites. How many kites are there in all?
  38. 38.4 + 5 + 5 =
  39. 39.14 + ? = 15
  40. 40.9 + 5 =

Answer key

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

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