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$5.4-.28$

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Add and subtract decimals

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Q.

5.4-.28

Line up and subtract: First, line up the decimal points and subtract. $5.4$ $-0.28$
Add zero for easier subtraction: Since there's no number in the hundredths place for $5.4$ , we can add a zero to make it easier. $5.40 - 0.28$
Borrow from tenths place: Now subtract the hundredths place: $0 - 8$ , but we can't do that, so we need to borrow from the tenths place.
Subtract hundredths and tenths: After borrowing, we have $10$ in the hundredths place and $3$ in the tenths place. $\newline$ $5.40$ becomes $5.30$ with a $10$ in the hundredths place. $\newline$ $5.30$ $\newline$ $-0.28$
Write down the result: Subtract the hundredths: $10 - 8$ equals $2$ . $\newline$ Subtract the tenths: $3 - 2$ equals $1$ . $\newline$ Subtract the ones: $5 - 0$ equals $5$ .
Write down the result: Subtract the hundredths: $10 - 8$ equals $2$ . Subtract the tenths: $3 - 2$ equals $1$ . Subtract the ones: $5 - 0$ equals $5$ . Write down the result: $5.12$ .

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