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Grade 3 Addition to 1000 Worksheets

Three-digit addition with totals up to 1000. The three sheets differ by how much regrouping is needed, which is where most mistakes in Grade 3 addition come from.

Ontario 2020 math curriculum, Grade 3: B2.4, B2.5 · 15 questions per sheet · answers included

Easier sheet

Add a two-digit number to a three-digit number, no regrouping.

Paperpath
Adding to 1000 · Grade 3 · Easier
Name ____________________
Date ____________________

Adding to 1000 · 15 questions

  1. 1
    559 + 10 =
  2. 2
    820 + 72 =
  3. 3
    488 + 10 =
  4. 4
    514 + 45 =
  5. 5
    574 + 10 =
  6. 6
    215 + 23 =
  7. 7
    726 + 40 =
  8. 8
    326 + 11 =
  9. 9
    155 + 23 =
  10. 10
    214 + 43 =
  11. 11
    141 + 12 =
  12. 12
    971 + 20 =
  13. 13
    131 + 50 =
  14. 14
    476 + 23 =
  15. 15
    116 + 70 =
Answers: scan the code, or visit paperpath.io/worksheets/grade-3/addition-to-1000
Answers: easier sheet
QuestionAnswer
Q1569
Q2892
Q3498
Q4559
Q5584
Q6238
Q7766
Q8337
Q9178
Q10257
Q11153
Q12991
Q13181
Q14499
Q15186

On level sheet

Add two three-digit numbers where the ones regroup.

Paperpath
Adding to 1000 · Grade 3 · On level
Name ____________________
Date ____________________

Adding to 1000 · 15 questions

  1. 1
    235 + 655 =
  2. 2
    118 + 855 =
  3. 3
    708 + 135 =
  4. 4
    731 + 139 =
  5. 5
    711 + 209 =
  6. 6
    632 + 239 =
  7. 7
    624 + 217 =
  8. 8
    823 + 148 =
  9. 9
    473 + 419 =
  10. 10
    373 + 318 =
  11. 11
    848 + 134 =
  12. 12
    146 + 128 =
  13. 13
    578 + 303 =
  14. 14
    322 + 319 =
  15. 15
    425 + 349 =
Answers: scan the code, or visit paperpath.io/worksheets/grade-3/addition-to-1000
Answers: on level sheet
QuestionAnswer
Q1890
Q2973
Q3843
Q4870
Q5920
Q6871
Q7841
Q8971
Q9892
Q10691
Q11982
Q12274
Q13881
Q14641
Q15774

Harder sheet

Add two three-digit numbers where the ones and the tens regroup.

Paperpath
Adding to 1000 · Grade 3 · Harder
Name ____________________
Date ____________________

Adding to 1000 · 15 questions

  1. 1
    175 + 565 =
  2. 2
    717 + 183 =
  3. 3
    515 + 285 =
  4. 4
    636 + 165 =
  5. 5
    518 + 195 =
  6. 6
    139 + 794 =
  7. 7
    668 + 272 =
  8. 8
    253 + 679 =
  9. 9
    568 + 178 =
  10. 10
    278 + 682 =
  11. 11
    119 + 385 =
  12. 12
    385 + 588 =
  13. 13
    482 + 248 =
  14. 14
    293 + 127 =
  15. 15
    357 + 164 =
Answers: scan the code, or visit paperpath.io/worksheets/grade-3/addition-to-1000
Answers: harder sheet
QuestionAnswer
Q1740
Q2900
Q3800
Q4801
Q5713
Q6933
Q7940
Q8932
Q9746
Q10960
Q11504
Q12973
Q13730
Q14420
Q15521

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