Question

Estimate the product of 3.9 and 4.6 using mental math

Answer 1

round 3.9 to 4 and 4.6 to 4.5 then you get lets see ... 0......18.... 5*4 is 20 then add 2 on to 4*4 is 18 then you get 180 but add the decimal point and you get 18

Explanation:

Answer 2

8.5 is the answer to ur problem