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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 544 · 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.Gurpreet has 13 mangoes and gets 2 mangoes more. How many mangoes does Gurpreet have now?
  2. 2.8 + 2 + 4 =
  3. 3.11 + ? = 12
  4. 4.4 + ? = 6
  5. 5.1 + 2 + 11 =
  6. 6.Karan has 7 mangoes and gets 5 mangoes more. How many mangoes does Karan have now?
  7. 7.Aarav has 6 pencils and gets 8 pencils more. How many pencils does Aarav have now?
  8. 8.Diya has 8 mangoes and gets 6 mangoes more. How many mangoes does Diya have now?
  9. 9.4 + 12 =
  10. 10.? + 4 = 8
  11. 11.19 + 1 =
  12. 12.5 + ? = 6
  13. 13.17 + 2 =
  14. 14.Vivaan has 3 crayons and gets 2 crayons more. How many crayons does Vivaan have now?
  15. 15.Gurpreet has 2 balls and gets 3 balls more. How many balls does Gurpreet have now?
  16. 16.Diya has 4 mangoes and gets 5 mangoes more. How many mangoes does Diya have now?
  17. 17.11 + 3 =
  18. 18.There are 3 white balls and 9 pink balls. How many balls are there in all?
  19. 19.? + 4 = 13
  20. 20.5 + 10 =
  21. 21.? + 2 = 7
  22. 22.There are 4 yellow balloons and 14 green balloons. How many balloons are there in all?
  23. 23.2 + 17 =
  24. 24.Dev has 11 marbles and gets 9 marbles more. How many marbles does Dev have now?
  25. 25.16 + 4 =
  26. 26.14 + 2 =
  27. 27.8 + 1 =
  28. 28.7 + 2 + 3 =
  29. 29.There are 9 blue flowers and 6 red flowers. How many flowers are there in all?
  30. 30.3 + 3 + 6 =
  31. 31.5 + 7 + 2 =
  32. 32.1 + 15 =
  33. 33.? + 2 = 9
  34. 34.1 + 5 =
  35. 35.9 + 8 =
  36. 36.? + 9 = 10
  37. 37.5 + 7 =
  38. 38.Isha has 9 balls and gets 3 balls more. How many balls does Isha have now?
  39. 39.4 + 5 =
  40. 40.9 + 5 =

Answer key

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

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