941 − 529
Common Core 3.NBT.A.2
3-digit subtraction with regrouping
Subtract from the ones place toward the hundreds. If a column is too small, trade one unit from the place to its left. That place goes down by 1, and the column you are in gains 10.
One worked example
352 − 178
- 2 < 8, so trade a ten: 12 − 8 = 4.
- 4 tens is less than 7, so trade a hundred: 14 − 7 = 7.
- 2 − 1 = 1. The difference is 174.
Answer: 174
Fluently subtract within 1,000.
Easy
Subtract. Regroup when a column is too small.
546 − 238
776 − 247
610 − 587
272 − 164
161 − 89
Answer key
- 412
- 308
- 529
- 23
- 108
- 72
Medium
Subtract. Regroup when a column is too small.
234 − 75
476 − 299
882 − 154
842 − 393
990 − 297
621 − 287
827 − 349
655 − 9
241 − 142
Answer key
- 159
- 177
- 728
- 449
- 693
- 334
- 478
- 646
- 99
Hard
Subtract. Regroup when a column is too small.
155 − 109
450 − 283
662 − 246
521 − 263
222 − 178
171 − 32
370 − 149
642 − 145
983 − 847
518 − 409
823 − 106
533 − 385
Answer key
- 46
- 167
- 416
- 258
- 44
- 139
- 221
- 497
- 136
- 109
- 717
- 148
Related skills
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