Show:
No Regrouping
With Regrouping
Mixed
To Borrow Or Not?
Single Digit
100
24-14=
10
100
23-18=
5
100
16-12=
4
100
24-9
Borrow!
100
7-3=
4
200
35-23=
12
200
42-25=
17
200
25-16=
9
200
16-13
Don't borrow!
200
13-6=
7
300
66-22=
44
300
56-19=
37
300
36-23=
13
300
65-48
Borrow!


!!!!!!!DOUBLE JEOPARDY!!!!!!!

300
14-9=
5
400
87-15=
72
400
84-39=
45
400
52-28=
24
400
21-19
Borrow!
400
16-8=
8
500
93-41=
52
500
97-68=
29


!!!!!!!DOUBLE JEOPARDY!!!!!!!

500
68-18=
50
500
99-95
Don't borrow!
500
17-8=
9