Question

Select the expression that correctly uses compatible numbers to estimate the product 31×67 (1 point) Responses 30×60 30 × 60 30×70 30 × 70 40×60 40 × 60 40×70

Answer 1

To estimate the product of 31 and 67 using compatible numbers, we should round each number to a nearby number that is easy to work with and results in a simpler multiplication.

- For 31, we can round it to 30.
- For 67, we can round it to 70.

So, the expression that correctly uses compatible numbers to estimate 31 × 67 is:

**30 × 70**

This choice makes calculation simpler while providing a close approximation of the actual product.