Question

Write the expanded form of the decimal number $25.7$.

Answer 1

Step 1: The place value chart for the decimal number.

Hundreds	Tens	Ones	$.$	Tenths	Hundredths	Thousandths
$100$	$10$	$1$	$.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$10$}\right.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$100$}\right.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$1000$}\right.$
	$2$	$5$	$.$	$7$

Step 2: The expanded form of the decimal number.

$25.7=\left(2\times 10\right)+\left(5\times 1\right)+\left(7\times \raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$10$}\right.\right)$

$=$ $20$ $+$ $5$ $+$ $\raisebox{1ex}{$7$}\!\left/ \!\raisebox{-1ex}{$10$}\right.$

Therefore, $25.7$ in the expanded form is $20+5+\raisebox{1ex}{$7$}\!\left/ \!\raisebox{-1ex}{$10$}\right.$