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1
8456−897
2
6043−259
3
4413−438
4
3308−679
5
6211−848
6
6126−588
7
9240−797
8
7926−928
9
5324−579
10
8045−678
11
1321−596
12
8455−997
13
1120−947
14
2222−928
15
3324−359
16
8210−818
17
2310−695
18
1362−388
19
8383−798
20
1625−736
Answer key
What is in this set
The numbers in this set run from 128 to 9,944.
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 3 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.