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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 321 · 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. 1.15 + 2 =
  2. 2.13 + 4 =
  3. 3.There are 11 blue balloons and 7 red balloons. How many balloons are there in all?
  4. 4.Farhan has 2 mangoes and gets 9 mangoes more. How many mangoes does Farhan have now?
  5. 5.? + 5 = 18
  6. 6.Kabir has 7 marbles and gets 7 marbles more. How many marbles does Kabir have now?
  7. 7.There are 10 green balloons and 2 pink balloons. How many balloons are there in all?
  8. 8.Pooja has 3 shells and gets 17 shells more. How many shells does Pooja have now?
  9. 9.3 + 9 =
  10. 10.? + 1 = 4
  11. 11.Nisha has 2 laddoos and gets 16 laddoos more. How many laddoos does Nisha have now?
  12. 12.Isha has 6 mangoes and gets 3 mangoes more. How many mangoes does Isha have now?
  13. 13.8 + 10 =
  14. 14.Vivaan has 15 shells and gets 5 shells more. How many shells does Vivaan have now?
  15. 15.There are 2 yellow beads and 4 red beads. How many beads are there in all?
  16. 16.? + 9 = 20
  17. 17.There are 5 yellow balloons and 5 pink balloons. How many balloons are there in all?
  18. 18.There are 8 blue kites and 7 green kites. How many kites are there in all?
  19. 19.There are 3 red crayons and 2 green crayons. How many crayons are there in all?
  20. 20.11 + ? = 12
  21. 21.? + 6 = 10
  22. 22.1 + 6 + 1 =
  23. 23.6 + 1 + 5 =
  24. 24.There are 6 green kites and 8 pink kites. How many kites are there in all?
  25. 25.Vivaan has 7 kites and gets 7 kites more. How many kites does Vivaan have now?
  26. 26.Isha has 4 mangoes and gets 4 mangoes more. How many mangoes does Isha have now?
  27. 27.There are 12 blue balloons and 8 green balloons. How many balloons are there in all?
  28. 28.? + 1 = 3
  29. 29.There are 10 red balloons and 8 green balloons. How many balloons are there in all?
  30. 30.3 + 1 + 3 =
  31. 31.8 + 1 =
  32. 32.There are 10 pink beads and 7 red beads. How many beads are there in all?
  33. 33.2 + 1 + 8 =
  34. 34.5 + ? = 20
  35. 35.6 + 2 + 7 =
  36. 36.Saanvi has 3 mangoes and gets 4 mangoes more. How many mangoes does Saanvi have now?
  37. 37.There are 3 red beads and 7 yellow beads. How many beads are there in all?
  38. 38.There are 4 pink beads and 11 blue beads. How many beads are there in all?
  39. 39.13 + 6 =
  40. 40.1 + 10 =

Answer key

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

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