Question

Estimate 5 4/10 x 7 4/5 to the nearest whole number

Answer 1

\[5\frac{ 4 }{ 10 }\times7\frac{ 4 }{ 5 }=\frac{ 54 }{ 10 }\times \frac{ 39 }{ 5 }=\frac{ 1053 }{ 25 }=43.12=?\]

Answer 2

or 5.4 *7.8
5.4=? write wholenumber
7.8=? write whole number.
find the product.

Answer 3

5 4/10 is just under 5.5
7 4/5 is just under 8
5 * 8 = 40
6 * 8 = 48
The average of 40 and 48 is 44.
Since both numbers are just under their approximations, I'd say the answer is around 42 or 43.