수와 연산 전체 문제

In the following exercises, simplify each expression.

$(-4.2)(100)$

In the following exercises, simplify each expression.

$0.96\div (-12)$

In the following exercises, simplify each expression.

$-5\div 0.025$

In the following exercises, simplify each expression.

$-0.6\div (-0.3)$

In the following exercises, simplify each expression.

${(0.7)}^{2}$

In the following exercises, simplify each expression.

$24\div (0.1+0.02)$

In the following exercises, simplify each expression.

$4(10.3-5.8)$

In the following exercises, simplify each expression.

$1.6+\frac{3}{8}$

In the following exercises, simplify each expression.

$\frac{2}{3}(14.65-4.6)$

In the following exercises, solve.

$m+3.7=2.5$

In the following exercises, solve.

$\frac{h}{0.5}=4.38$

In the following exercises, solve.

$-6.5y=-57.2$

In the following exercises, solve.

$1.94=a-2.6$

Three friends went out to dinner and agreed to split the bill evenly. The bill was $\char36 79.35.$ How much should each person pay?

A circle has radius $12.$ Find the ⓐ circumference and ⓑ area. $[\text{Use}\,3.14\,\text{for}\,\pi .]$

The ages, in months, of $10$ children in a preschool class are:

$55$, $55$, $50$, $51$, $52$, $50$, $53$, $51$, $55$, $49$

Find the ⓐ mean ⓑ median ⓒ mode

Of the $16$ nurses in Doreen’s department, $12$ are women and $4$ are men. One of the nurses will be assigned at random to work an extra shift next week. ⓐ Find the probability a woman nurse will be assigned the extra shift. ⓑ Convert the fraction to a decimal.

Find each unit price and then the better buy.

Laundry detergent: $64$ ounces for $\char36 10.99$ or $48$ ounces for $\char36 8.49$

In the following exercises, simplify.

$\sqrt{36+64}$

In the following exercises, simplify.

$\sqrt{144{n}^{2}}$