Question

computation
729.35 - 203.63 =
430 × 57 =
45.45 ÷ 4.5 =

Explanation:

Step1: Subtract decimals aligning points

$729.35 - 203.63 = 525.72$

Step2: Multiply by breaking 57

$430 \times 57 = 430 \times (50+7) = 430\times50 + 430\times7 = 21500 + 3010 = 24510$

Step3: Eliminate decimals for division

$45.45 \div 4.5 = \frac{45.45 \times 10}{4.5 \times 10} = \frac{454.5}{45} = 10.1$

Answer:

$729.35-203.63 = 525.72$
$430 \times 57 = 24510$
$45.45 \div 4.5 = 10.1$