# Test: Arithmetic V - Ambitious

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Question 1:   Calculate: $6\frac{2}{3}-\frac{7}{40}\left(\frac{3}{7}-2\frac{1}{3}\right)$
$7$
$\frac{1}{7}$
$-7$
$-\frac{1}{7}$
Question 2:   Calculate: $\left(3.4:1.7+0.57:1.9\right)×4.9$
$9.7$
$11.27$
$8.79$
$12.11$
Question 3:   $0.2$ of some number is equal to $65$ . Find that number.
$325$
$130$
$260$
$13$
Question 4:   Calculate: $|1-\sqrt{3}|-\sqrt{3}$
$-1$
$\sqrt{3}$
$-\sqrt{3}$
$1$
Question 5:   First number is $138$ . Second number is $20%$ of the first number. Find the sum of those numbers.
$0.276$
$16.56$
$27.6$
$165.6$
Question 6:   Calculate: ${4}^{5}:16+{\left(7.6-11.6\right)}^{3}$
$-124$
$1.24$
$124$
$0$
Question 7:   In $2\frac{2}{5}$ hours a boy walked $7.2$ kilometers. How many kilometers the boy will walk with the same speed in $1.5$ hours?
$45m$
$4.5km$
$45km$
$450m$
Question 8:   Area of a rectangular field is $64.8{m}^{2}$ , one of its sides is $12m$ . Find a perimeter of the fence around that area.
$34.8{m}^{2}$
$34.8m$
$64.8m$
$348m$
Question 9:   Calculate:$\frac{{48}^{2}-{31}^{2}}{\sqrt{280+{3}^{2}}}$
$79$
$-790$
$-79$
$790$
Question 10:   Calculate:$1.2×{10}^{-3}×0.1:{\left(-0.5\right)}^{-3}-\frac{1}{8}$
$-1.25015$
$0.125015$
$1.25015$
$-0.125015$