Printable math sheet featuring 20 subtraction problems in columns for third-grade students.
Grade 3 subtraction worksheet with 20 column subtraction problems.
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Step-by-step solution for: Grade 3 Subtraction Worksheets | Free Worksheets | Printables
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Show Answer Key & Explanations
Step-by-step solution for: Grade 3 Subtraction Worksheets | Free Worksheets | Printables
Here are the solutions to the subtraction problems. I have worked through each one carefully, column by column (ones, then tens, then hundreds), remembering to borrow when the top number is smaller than the bottom number.
1. 139 - 47
* Ones: $9 - 7 = 2$
* Tens: $3 - 4$ (cannot do, so borrow from hundreds). $13 - 4 = 9$
* Hundreds: $0$ (since we borrowed the 1)
* Result: 92
2. 331 - 109
* Ones: $1 - 9$ (borrow from tens). $11 - 9 = 2$
* Tens: $2 - 0 = 2$ (the 3 became a 2)
* Hundreds: $3 - 1 = 2$
* Result: 222
3. 219 - 120
* Ones: $9 - 0 = 9$
* Tens: $1 - 2$ (borrow from hundreds). $11 - 2 = 9$
* Hundreds: $1 - 1 = 0$
* Result: 99
4. 120 - 103
* Ones: $0 - 3$ (borrow from tens). $10 - 3 = 7$
* Tens: $1 - 0 = 1$ (the 2 became a 1)
* Hundreds: $1 - 1 = 0$
* Result: 17
5. 381 - 101
* Ones: $1 - 1 = 0$
* Tens: $8 - 0 = 8$
* Hundreds: $3 - 1 = 2$
* Result: 280
6. 236 - 178
* Ones: $6 - 8$ (borrow from tens). $16 - 8 = 8$
* Tens: $2 - 7$ (borrow from hundreds). $12 - 7 = 5$ (the 3 became a 2)
* Hundreds: $1 - 1 = 0$ (the 2 became a 1)
* Result: 58
7. 216 - 178
* Ones: $6 - 8$ (borrow from tens). $16 - 8 = 8$
* Tens: $0 - 7$ (borrow from hundreds). $10 - 7 = 3$ (the 1 became a 0)
* Hundreds: $1 - 1 = 0$ (the 2 became a 1)
* Result: 38
8. 194 - 56
* Ones: $4 - 6$ (borrow from tens). $14 - 6 = 8$
* Tens: $8 - 5 = 3$ (the 9 became an 8)
* Hundreds: $1 - 0 = 1$
* Result: 138
9. 712 - 157
* Ones: $2 - 7$ (borrow from tens). $12 - 7 = 5$
* Tens: $0 - 5$ (borrow from hundreds). $10 - 5 = 5$ (the 1 became a 0)
* Hundreds: $6 - 1 = 5$ (the 7 became a 6)
* Result: 555
10. 323 - 134
* Ones: $3 - 4$ (borrow from tens). $13 - 4 = 9$
* Tens: $1 - 3$ (borrow from hundreds). $11 - 3 = 8$ (the 2 became a 1)
* Hundreds: $2 - 1 = 1$ (the 3 became a 2)
* Result: 189
11. 476 - 169
* Ones: $6 - 9$ (borrow from tens). $16 - 9 = 7$
* Tens: $6 - 6 = 0$ (the 7 became a 6)
* Hundreds: $4 - 1 = 3$
* Result: 307
12. 508 - 264
* Ones: $8 - 4 = 4$
* Tens: $0 - 6$ (borrow from hundreds). $10 - 6 = 4$
* Hundreds: $4 - 2 = 2$ (the 5 became a 4)
* Result: 244
13. 260 - 129
* Ones: $0 - 9$ (borrow from tens). $10 - 9 = 1$
* Tens: $5 - 2 = 3$ (the 6 became a 5)
* Hundreds: $2 - 1 = 1$
* Result: 131
14. 517 - 239
* Ones: $7 - 9$ (borrow from tens). $17 - 9 = 8$
* Tens: $0 - 3$ (borrow from hundreds). $10 - 3 = 7$ (the 1 became a 0)
* Hundreds: $4 - 2 = 2$ (the 5 became a 4)
* Result: 278
15. 635 - 189
* Ones: $5 - 9$ (borrow from tens). $15 - 9 = 6$
* Tens: $2 - 8$ (borrow from hundreds). $12 - 8 = 4$ (the 3 became a 2)
* Hundreds: $5 - 1 = 4$ (the 6 became a 5)
* Result: 446
16. 452 - 56
* Ones: $2 - 6$ (borrow from tens). $12 - 6 = 6$
* Tens: $4 - 5$ (borrow from hundreds). $14 - 5 = 9$ (the 5 became a 4)
* Hundreds: $3 - 0 = 3$ (the 4 became a 3)
* Result: 396
17. 268 - 145
* Ones: $8 - 5 = 3$
* Tens: $6 - 4 = 2$
* Hundreds: $2 - 1 = 1$
* Result: 123
18. 357 - 180
* Ones: $7 - 0 = 7$
* Tens: $5 - 8$ (borrow from hundreds). $15 - 8 = 7$
* Hundreds: $2 - 1 = 1$ (the 3 became a 2)
* Result: 177
19. 320 - 109
* Ones: $0 - 9$ (borrow from tens). $10 - 9 = 1$
* Tens: $1 - 0 = 1$ (the 2 became a 1)
* Hundreds: $3 - 1 = 2$
* Result: 211
20. 188 - 132
* Ones: $8 - 2 = 6$
* Tens: $8 - 3 = 5$
* Hundreds: $1 - 1 = 0$
* Result: 56
Final Answer:
1. 92
2. 222
3. 99
4. 17
5. 280
6. 58
7. 38
8. 138
9. 555
10. 189
11. 307
12. 244
13. 131
14. 278
15. 446
16. 396
17. 123
18. 177
19. 211
20. 56
1. 139 - 47
* Ones: $9 - 7 = 2$
* Tens: $3 - 4$ (cannot do, so borrow from hundreds). $13 - 4 = 9$
* Hundreds: $0$ (since we borrowed the 1)
* Result: 92
2. 331 - 109
* Ones: $1 - 9$ (borrow from tens). $11 - 9 = 2$
* Tens: $2 - 0 = 2$ (the 3 became a 2)
* Hundreds: $3 - 1 = 2$
* Result: 222
3. 219 - 120
* Ones: $9 - 0 = 9$
* Tens: $1 - 2$ (borrow from hundreds). $11 - 2 = 9$
* Hundreds: $1 - 1 = 0$
* Result: 99
4. 120 - 103
* Ones: $0 - 3$ (borrow from tens). $10 - 3 = 7$
* Tens: $1 - 0 = 1$ (the 2 became a 1)
* Hundreds: $1 - 1 = 0$
* Result: 17
5. 381 - 101
* Ones: $1 - 1 = 0$
* Tens: $8 - 0 = 8$
* Hundreds: $3 - 1 = 2$
* Result: 280
6. 236 - 178
* Ones: $6 - 8$ (borrow from tens). $16 - 8 = 8$
* Tens: $2 - 7$ (borrow from hundreds). $12 - 7 = 5$ (the 3 became a 2)
* Hundreds: $1 - 1 = 0$ (the 2 became a 1)
* Result: 58
7. 216 - 178
* Ones: $6 - 8$ (borrow from tens). $16 - 8 = 8$
* Tens: $0 - 7$ (borrow from hundreds). $10 - 7 = 3$ (the 1 became a 0)
* Hundreds: $1 - 1 = 0$ (the 2 became a 1)
* Result: 38
8. 194 - 56
* Ones: $4 - 6$ (borrow from tens). $14 - 6 = 8$
* Tens: $8 - 5 = 3$ (the 9 became an 8)
* Hundreds: $1 - 0 = 1$
* Result: 138
9. 712 - 157
* Ones: $2 - 7$ (borrow from tens). $12 - 7 = 5$
* Tens: $0 - 5$ (borrow from hundreds). $10 - 5 = 5$ (the 1 became a 0)
* Hundreds: $6 - 1 = 5$ (the 7 became a 6)
* Result: 555
10. 323 - 134
* Ones: $3 - 4$ (borrow from tens). $13 - 4 = 9$
* Tens: $1 - 3$ (borrow from hundreds). $11 - 3 = 8$ (the 2 became a 1)
* Hundreds: $2 - 1 = 1$ (the 3 became a 2)
* Result: 189
11. 476 - 169
* Ones: $6 - 9$ (borrow from tens). $16 - 9 = 7$
* Tens: $6 - 6 = 0$ (the 7 became a 6)
* Hundreds: $4 - 1 = 3$
* Result: 307
12. 508 - 264
* Ones: $8 - 4 = 4$
* Tens: $0 - 6$ (borrow from hundreds). $10 - 6 = 4$
* Hundreds: $4 - 2 = 2$ (the 5 became a 4)
* Result: 244
13. 260 - 129
* Ones: $0 - 9$ (borrow from tens). $10 - 9 = 1$
* Tens: $5 - 2 = 3$ (the 6 became a 5)
* Hundreds: $2 - 1 = 1$
* Result: 131
14. 517 - 239
* Ones: $7 - 9$ (borrow from tens). $17 - 9 = 8$
* Tens: $0 - 3$ (borrow from hundreds). $10 - 3 = 7$ (the 1 became a 0)
* Hundreds: $4 - 2 = 2$ (the 5 became a 4)
* Result: 278
15. 635 - 189
* Ones: $5 - 9$ (borrow from tens). $15 - 9 = 6$
* Tens: $2 - 8$ (borrow from hundreds). $12 - 8 = 4$ (the 3 became a 2)
* Hundreds: $5 - 1 = 4$ (the 6 became a 5)
* Result: 446
16. 452 - 56
* Ones: $2 - 6$ (borrow from tens). $12 - 6 = 6$
* Tens: $4 - 5$ (borrow from hundreds). $14 - 5 = 9$ (the 5 became a 4)
* Hundreds: $3 - 0 = 3$ (the 4 became a 3)
* Result: 396
17. 268 - 145
* Ones: $8 - 5 = 3$
* Tens: $6 - 4 = 2$
* Hundreds: $2 - 1 = 1$
* Result: 123
18. 357 - 180
* Ones: $7 - 0 = 7$
* Tens: $5 - 8$ (borrow from hundreds). $15 - 8 = 7$
* Hundreds: $2 - 1 = 1$ (the 3 became a 2)
* Result: 177
19. 320 - 109
* Ones: $0 - 9$ (borrow from tens). $10 - 9 = 1$
* Tens: $1 - 0 = 1$ (the 2 became a 1)
* Hundreds: $3 - 1 = 2$
* Result: 211
20. 188 - 132
* Ones: $8 - 2 = 6$
* Tens: $8 - 3 = 5$
* Hundreds: $1 - 1 = 0$
* Result: 56
Final Answer:
1. 92
2. 222
3. 99
4. 17
5. 280
6. 58
7. 38
8. 138
9. 555
10. 189
11. 307
12. 244
13. 131
14. 278
15. 446
16. 396
17. 123
18. 177
19. 211
20. 56
Parent Tip: Review the logic above to help your child master the concept of year 3 subtraction worksheet.
