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Subtracting Numbers Within 1000

Page 3 of 5

Subtract the tens...  Then, subtract the hundreds...

Work for 639-275...  Subtracting the tens Work for 639-275...  Subtracting the hundreds

So, 639-275=364

OK, now we're ready to do one with TWO borrows in it!  And I'm going to use the faster way to show my work so you can get used to it.

Check it out:


Stack and line things up:


Do the ones stripe first...  We can't do 4-9, so we need to borrow from the tens stripe!

Work for 834-159...  Take a chunk of ten off the 3...  Put it with the 4 in the ones stripe... 10+4=14

We'll finish it on the next page!