How to subtract with friendly numbers

Subtract With Friendly Numbers

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Write an equation.

Write an equation.

Either add or subtract from the subtrahend so that you get a friendly number.

Either add or subtract from the subtrahend so that you get a friendly number.

Whatever you do to the subtrahend, you need to do the same to the minuend. That way, the difference will still be the correct answer.

Whatever you do to the subtrahend, you need to do the same to the minuend. That way, the difference will still be the correct answer.

Now you have a new equation which is much easier to solve.

Now you have a new equation which is much easier to solve.

Simply solve your new equation which will result in the same difference as the original equation.

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