Вычислите удобным способом. 0.5*5.38*2= 0.25*12.63*4= 0.125*0.823*8= 5*57.2*0.2=...

Решите задачу:

$0.5*5.38*2= \frac{1}{2} *5.38*2=5.38 \\ 0.25*12.63*4= \frac{1}{4} *12.63*4=12.63 \\ 0.125*0.823*8= \frac{x1}{8}*0.823*8=0.823 \\ 5*57.2*0.2=5*57.2* \frac{1}{5} =57.2 \\ 2.5*0.23*4= \frac{25}{10} *0.23* \frac{100}{25} =0.23*10=2.3 \\ 1.25*17.2*8= \frac{125}{100}*17.2* \frac{1000}{125} =17.2*10=172$