Question

Estimate 8 1/3 x 2 4/5 using any method you like. Then find the actual product. Use your estimate to show that your answer is reasonable

Answer 1

@thomaster @ladym @Preetha help me plz

Answer 2

@angel12310

Answer 3

@Hero

Answer 4

HELP! HELP! HELP! HELP!!!!!!!

Answer 5

I prefer the expanded form

\[\left(8 + \frac{1}{3}\right)\left(2 + \frac{4}{5}\right)\]
\[=8\left(2 + \frac{4}{5}\right) + \frac{1}{3}\left(2 + \frac{4}{5}\right)\]
\[=16 + \frac{32}{5} + \frac{2}{3} + \frac{4}{15}\]
\[=16 + 6 + \frac{2}{5} + \frac{2}{3} + \frac{4}{5}\]
\[=22 + \frac{6}{15} + \frac{10}{15} + \frac{4}{15}\]
\[=22 + \frac{15}{15} + \frac{5}{15}\]
\[=23 + \frac{1}{3}\]

Answer 6

8 1/3 x 2 4/5

Estimate: 8 1/3 is close to 8.
2 4/5 is close to 3.
8 x 3 = 24
My estimate is 24

Actual product:
\(8 \dfrac{1}{3} \times 2 \dfrac{4}{5} \)

\(= \dfrac{25}{3} \times \dfrac{14}{5} \)

\(= \dfrac{\cancel{5}\times 5}{3} \times \dfrac{14}{\cancel{5}} \)

\(= \dfrac{70}{3} \)

\(= 23 \dfrac{1}{3} \)