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1
1000−480
2
2003−922
3
3001−1042
4
2000−1478
5
2004−621
6
1000−254
7
6004−3307
8
8001−405
9
3001−389
10
7000−4352
11
8000−5235
12
3002−2010
13
8001−745
14
6000−3577
15
2002−732
16
2002−1136
17
5003−2170
18
3003−1817
19
6000−3381
20
1000−720
Answer key
What is in this set
The numbers in this set run from 104 to 9,004.
Every problem in it will borrow across a zero.
A careful solution takes 6 written steps on average.
The mistake this set invites most often, in 99% 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 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.