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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 753 · 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. 1.7 + 1 + 11 =
  2. 2.6 + ? = 8
  3. 3.? + 4 = 12
  4. 4.4 + 16 =
  5. 5.1 + ? = 6
  6. 6.4 + 8 + 1 =
  7. 7.19 + 1 =
  8. 8.Gurpreet has 2 shells and gets 6 shells more. How many shells does Gurpreet have now?
  9. 9.2 + ? = 5
  10. 10.? + 4 = 5
  11. 11.Rohan has 8 balls and gets 12 balls more. How many balls does Rohan have now?
  12. 12.2 + 6 + 10 =
  13. 13.1 + 11 =
  14. 14.4 + 2 + 4 =
  15. 15.? + 2 = 3
  16. 16.There are 3 yellow kites and 2 blue kites. How many kites are there in all?
  17. 17.9 + ? = 18
  18. 18.16 + 3 =
  19. 19.5 + ? = 19
  20. 20.? + 5 = 8
  21. 21.There are 11 white balloons and 5 red balloons. How many balloons are there in all?
  22. 22.14 + 2 =
  23. 23.? + 5 = 11
  24. 24.Riya has 6 bananas and gets 1 banana more. How many bananas does Riya have now?
  25. 25.Manav has 3 crayons and gets 4 crayons more. How many crayons does Manav have now?
  26. 26.There are 2 white balloons and 2 green balloons. How many balloons are there in all?
  27. 27.Arjun has 15 pencils and gets 1 pencil more. How many pencils does Arjun have now?
  28. 28.2 + ? = 4
  29. 29.2 + 4 =
  30. 30.11 + ? = 20
  31. 31.Karan has 8 mangoes and gets 10 mangoes more. How many mangoes does Karan have now?
  32. 32.1 + ? = 16
  33. 33.3 + 2 + 4 =
  34. 34.17 + 3 =
  35. 35.There are 3 pink balloons and 10 green balloons. How many balloons are there in all?
  36. 36.There are 11 green kites and 2 yellow kites. How many kites are there in all?
  37. 37.5 + 4 =
  38. 38.There are 2 red beads and 2 pink beads. How many beads are there in all?
  39. 39.13 + 2 =
  40. 40.2 + 3 + 8 =

Answer key

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

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