## Basic College Mathematics (10th Edition)

Estimate: 20 $\div$ 4 = 5 Exact: 4.175
20.04 $\div$ 4.8 Lets First find Estimate: 20.04 (rounded to) 20 4.8 (rounded to) 4 20.04 $\div$ 4.8 = 20 $\div$ 4 = 5 Now, lets find Exact: 20.04 $\div$ 4.8 = $\frac{20.04}{4.8}$ = $\frac{2004}{480}$ (multiply numerator & denominator by 100) = $\frac{2004}{480}$ = $\frac{2004\div12}{480\div12}$ (divide by common factor 12) = $\frac{167}{40}$ = 4.175 (By solving we get)