Test: Arithmetic I - Challenging

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Question 1:   Which of the following set of numbers consists only from the whole numbers?
$\frac{1}{10}\sqrt[3]{216},{3}^{3},{4}^{2}$
$\sqrt{1000},100,{10}^{4}$
$-725,\sqrt{625},{5}^{2}$
$\sqrt{25-9},{2}^{6},\frac{1}{5}\sqrt[3]{125}$
Question 2:   Which of the following set of numbers consists only from natural numbers?
$12.5,\sqrt{8},{\left(\sqrt{6}\right)}^{2}$
$\sqrt[3]{8},17,4\frac{1}{2}$
${\left(-2\right)}^{2},{\left(-7\right)}^{3},100$
$|-15|,\sqrt{{5}^{2}-{4}^{2}},\sqrt{5}\cdot \sqrt{5}$
Question 3:   Which of the following set of numbers consists only of integers:
$-2\cdot |-5|,\pi ,30$
$|-\frac{16}{4}|,\sqrt[4]{16},15\cdot 5-100$
$\frac{10}{2},5\cdot 2.5,49$
${\pi }^{2},-145,\sqrt{49}$
Question 4:   Arrange the following set of numbers from the largest to the smallest: $\frac{2}{3}\pi ,{2}^{2},|-1|,3,-\frac{3}{2}$
${2}^{2},\frac{2}{3}\pi ,3,|-1|,-\frac{3}{2}$
${2}^{2},3,\frac{2}{3}\pi ,|-1|,-\frac{3}{2}$
$3,{2}^{2},\frac{2}{3}\pi ,-\frac{3}{2},|-1|$
${2}^{2},3,\frac{2}{3}\pi ,-\frac{3}{2},|-1|$
Question 5:   Arrange the following set of numbers from the smallest to the largest: ${\left(\sqrt{2}\right)}^{2},\frac{5}{2},\frac{\pi }{2},|-\frac{4}{3}|,3$
$|-\frac{4}{3}|,\frac{\pi }{2},\frac{5}{2},3,{\left(\sqrt{2}\right)}^{2}$
$\frac{\pi }{2},|-\frac{4}{3}|,{\left(\sqrt{2}\right)}^{2},\frac{5}{2},3$
$|-\frac{4}{3}|,\frac{\pi }{2},{\left(\sqrt{2}\right)}^{2},\frac{5}{2},3$
$\frac{\pi }{2},|-\frac{4}{3}|,\frac{5}{2},{\left(\sqrt{2}\right)}^{2},3$
Question 6:   Round to the nearest integer: $12.39+18.42-2.73$
$34$
$28$
$29$
$31$
Question 7:   Round to the nearest integer: $16.61+13.33-2.25$
$26$
$28$
$29$
$27$
Question 8:   Round to the nearest $10$ : $-78.46+28.95+11.13$
$-40$
$-30$
$-50$
$-20$
Question 9:   Round to the nearest $100$ : $336.27+\left(-785.11\right)+112.16$
$-200$
$-300$
$-500$
$-400$
Question 10:   Round to the nearest $100$ : $-186.44-314.82-212.61$
$-600$
$-700$
$-800$
$-900$