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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 466 · 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. 1.1 + 4 =
  2. 2.4 + 8 + 1 =
  3. 3.There are 9 blue beads and 9 yellow beads. How many beads are there in all?
  4. 4.There are 2 yellow crayons and 15 red crayons. How many crayons are there in all?
  5. 5.5 + ? = 20
  6. 6.2 + 4 + 11 =
  7. 7.Meera has 12 marbles and gets 1 marble more. How many marbles does Meera have now?
  8. 8.Zoya has 8 mangoes and gets 3 mangoes more. How many mangoes does Zoya have now?
  9. 9.8 + 5 + 4 =
  10. 10.Karan has 6 bananas and gets 1 banana more. How many bananas does Karan have now?
  11. 11.1 + ? = 3
  12. 12.2 + 1 + 11 =
  13. 13.Rohan has 5 laddoos and gets 12 laddoos more. How many laddoos does Rohan have now?
  14. 14.3 + 7 + 10 =
  15. 15.Tara has 4 balls and gets 9 balls more. How many balls does Tara have now?
  16. 16.There are 3 pink balloons and 5 red balloons. How many balloons are there in all?
  17. 17.7 + 6 + 7 =
  18. 18.15 + 2 =
  19. 19.5 + 7 =
  20. 20.2 + 2 + 10 =
  21. 21.Nisha has 9 mangoes and gets 9 mangoes more. How many mangoes does Nisha have now?
  22. 22.Karan has 5 balls and gets 2 balls more. How many balls does Karan have now?
  23. 23.17 + 1 =
  24. 24.? + 3 = 13
  25. 25.8 + 1 + 2 =
  26. 26.11 + 8 =
  27. 27.? + 8 = 9
  28. 28.Ananya has 12 flowers and gets 3 flowers more. How many flowers does Ananya have now?
  29. 29.10 + ? = 15
  30. 30.There are 11 yellow flowers and 3 green flowers. How many flowers are there in all?
  31. 31.Vivaan has 6 crayons and gets 11 crayons more. How many crayons does Vivaan have now?
  32. 32.1 + ? = 4
  33. 33.There are 7 pink balls and 8 white balls. How many balls are there in all?
  34. 34.Riya has 15 bananas and gets 1 banana more. How many bananas does Riya have now?
  35. 35.Dev has 13 marbles and gets 2 marbles more. How many marbles does Dev have now?
  36. 36.There are 7 green balloons and 3 white balloons. How many balloons are there in all?
  37. 37.There are 4 white crayons and 9 blue crayons. How many crayons are there in all?
  38. 38.Tara has 7 books and gets 8 books more. How many books does Tara have now?
  39. 39.4 + ? = 7
  40. 40.? + 1 = 6

Answer key

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

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