## Basic College Mathematics (9th Edition)

Estimate: $40 \times 3$ = 120 Exact:141.57
$42.9 \times 3.3$ First Let's find Estimate: 42.9 (rounds to) 40 3.3 (rounds to) 3 So, $42.9 \times 3.3$ = $40 \times 3$ = 120 Now, Let's find Exact: 42.9 $\times$ 3.3 ______ 1287 + 1287 ______ 141.57 (2 decimals point in product)