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1
7367−5568
2
6693−1424
3
9009−6882
4
6295−2168
5
8522−2540
6
9707−5773
7
5432−3228
8
1328−1293
9
9293−1278
10
6212−3392
11
3248−1163
12
9629−7661
13
6225−2601
14
7180−1212
15
8882−5687
16
9946−6982
17
4757−4519
18
7228−5636
19
2490−1428
20
5893−2579
Answer key
What is in this set
The numbers in this set run from 1,084 to 9,991.
Every problem in it will need a borrow from the column to the left.
A careful solution takes 5 written steps on average.
The mistake this set invites most often, in 100% of the problems: each column took the smaller digit from the larger one instead of borrowing from the column to its left.
Answers are a whole number.
Drawing 240 problems from this page produced 240 different ones, 100% — 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.