What is the approximation of 48 times 56?

Answer 1

Very rough approximation: 50 * 50 = 2500

Slightly rough approximation: Average of 48 and 56 is 52

so 48*56 = approx 522 = (50+2)2 = 502 + 2*50*2 + 22 = approx 502 + 2*50*2 = 2500 + 200 = 2700

For reference, exact answer = 2688