How to subtract even numbers

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SAT Math › How to subtract even numbers

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If is an odd integer and is an even integer, which of the following must true of ?

The result will be odd.

CORRECT

The result will be even.

We cannot draw any conclusions from the given information.

An even number subtracted from an odd number will always produce an odd result.

None of the other answer choices are correct.

Subtract:

CORRECT

When subtracting even numbers, we will know that the ones digit will also be an even number.

Borrow a one from the tens digit of 64, since we cannot subtract the ones digits.

After borrowing, we can then subtract.

Subtract the tens place. The tens place of 64 becomes a 5.

Combine the two numbers.

The answer is .