Basic Maths: Test 57

$?=4+44+444+4.444=496.444$

$$\begin{align} & ?=11\frac{1}{2}+9\frac{5}{6}-5\frac{2}{3}-2\frac{7}{9} \\ & =\left( 11+9-5-2 \right)+\left( \frac{1}{2}+\frac{5}{6}-\frac{2}{3}-\frac{7}{9} \right) \\ & =13+\left( \frac{9+15-12-14}{18} \right) \\ & =13-\frac{2}{18}=13-\frac{1}{9}=12\frac{8}{9} \\ \end{align}$$

$\begin{align} & =0.01\times 0.001\times 0.0001\times {{10}^{10}} \\ & ={{10}^{-9}}\times {{10}^{10}}=10 \\ \end{align}$

$\begin{align} & =\frac{2.40\,\left( 2.55-2.35 \right)}{0.048} \\ & =\frac{2.40\times 0.20}{0.048}=10 \\ \end{align}$