Question

They keep returning and saying show work again​

Answer 1

Answer:

We conclude that:

$20\times \:3\frac{1}{5}=64$

Step-by-step explanation:

Given the expression

$20\:\times 3\frac{1}{5}$

convert mixed number to improper fraction: $a\frac{b}{c}=\frac{a\times c+b}{c}$

i.e. $3\frac{1}{5}=\frac{3\times 5+1}{5}=\frac{16}{5}$

so the expression becomes

$20\:\times 3\frac{1}{5}\:=20\times \:\frac{16}{5}$

Factor the number: 20 = 5×4

              $=5\times \:4\times \frac{16}{5}$

Cross-cancel common factor: 5

               $=4\times \:16$    

Multiply the numbers: 4×16 = 64

               $=64$

Therefore, we conclude that:

$20\times \:3\frac{1}{5}=64$