Question

1)4/5 ×(-1 1/4) × 10/3 2)4/5 ×(-1 1/4) ÷ 10/3 3)4/5 +(-1 1/4) + 10/3 4)4/5 1/4) - 10/3

Answer 1

1.

$\frac{4}{5}*(-1\frac{1}{4})*\frac{10}{3}=-\frac{4*5*10}{5*4*3}=-\frac{10}{3}=-3\frac{1}{3}$

2.

$\frac{4}{5}*(-1\frac{1}{4}):\frac{10}{3}= -\frac{4*5*3}{5*4*10}= -\frac{3}{10}=-0.3$

3.

$\frac{4}{5}+(-1\frac{1}{4})+\frac{10}{3}=\frac{4}{5}-\frac{5}{4}+\frac{10}{3}=\frac{4*4*3-5*5*3+10*5*4}{60}=\frac{48-75+200}{60}=\frac{173}{60}=2\frac{53}{60}$

4.

$\frac{4}{5} -(-1\frac{1}{4}) -\frac{10}{3}=\frac{4}{5} +\frac{5}{4} -\frac{10}{3}=\frac{4*4*3 +5*5*3-10*5*4}{60}=\frac{48+75-200}{60}=-\frac{77}{60}=-1\frac{17}{60}$