When you subtract with regrouping, remember the BBB rule:

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Transcript When you subtract with regrouping, remember the BBB rule: 

When you subtract with
regrouping, remember the
BBB rule:
When the big number is on
the bottom then you
borrow!
Subtraction Song
2 8 If there’s more on the top– no need to stop!
-16
1 16
2 6 If there’s more on the floor– go next door
- 1 9 and get ten more!
1 16
2 6 If the numbers are the same– zero is the game!
-19
07