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1
203−196
2
704−66
3
401−53
4
200−193
5
200−17
6
501−221
7
900−78
8
404−354
9
700−527
10
801−379
11
504−445
12
603−468
13
903−137
14
301−77
15
404−282
16
401−74
17
200−55
18
700−449
19
103−81
20
800−392
Answer key
What is in this set
The numbers in this set run from 11 to 904.
Every problem in it will borrow across a zero.
A careful solution takes 5 written steps on average.
The mistake this set invites most often, in 98% of the problems: each column took the smaller digit from the larger one instead of borrowing across the zeros.
Answers are a whole number.
Drawing 240 problems from this page produced 236 different ones, 98% — so a sheet of 20 is a new sheet almost every time.
We would put this in front of a grade 4 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.