Question

estimate 12 × 485. first, round each factor. 12 rounds to 10. 485 rounds to 500. next, multiply the rounded factors. 10 × 500 = 5000. key idea how can i estimate a product? i can? one or more factors and then multiply to estimate a product.

Explanation:

The example shows that estimating a product involves adjusting each factor to a simpler, nearby number first, then multiplying those adjusted numbers. The blank needs the term describing this adjustment step used in the example.

Answer:

round