Subtracting Numbers Within 100 With Regrouping
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Borrowing from the tens:

Work for 75-28...  Split the 7 into a 6 and a 1...  Since 7=6+1

Now, remember, that's really 70 = 60 + 10!

Remember the big key:

A 1 in the tens stripe is 10...
and that's the same as 10 ones!

 

Work for 75-28

Now, add the 10 and the 5 in the ones stripe:

Work for 75-28

See if you can finish it, then go to the next page to see how you did!

 

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