10/21 Pre-Algebra

10/21 Pre-Algebra

Open Ended

What is your favorite animal and why?

Multiple Choice

Write

 $2.3\times10^{-3}$  in standard form.

• 2,300

• 0.0023

• 23,000

• 0.00023

Multiple Choice

Select the answer which shows the real numbers in ascending order.

• $-4\frac{1}{9},\ 4\%,\ \sqrt{24},\ 4.9$

• $4\%,\ -4\frac{1}{9},\ \sqrt{24},\ 4.9$

• $4.9,\ \sqrt{24},\ 4\%,\ -4\frac{1}{9}$

• $-4\frac{1}{9},\ \sqrt{24},\ 4.9,\ \ 4\%$

Open Ended

Why is

 $\pi$  an irrational number?

Multiple Select

Select all subsets that

 $0$  would belong.

• Natural

• Whole

• Integer

• Rational

• Real

Multiple Select

Select all subsets that

 $\frac{9}{15}$  would belong.

• Natural

• Whole

• Integer

• Rational

• Real

Multiple Select

Select all subsets that

 $-\frac{12}{2}$  would belong.

• Natural

• Whole

• Integer

• Rational

• Real

Multiple Choice

Which subsets of real numbers best describe

 $-\sqrt{81}$  ?

• Real, rational

• Real, Irrational

• Real, rational, integer

• Real, irrational, integer

Multiple Choice

Evaluate: (answer in simplest form)

 $3\frac{1}{2}\times2$  

•  $7$  

•  $4$  

•  $\frac{7}{1}$  

•  $\frac{14}{2}$  

Multiple Choice

Evaluate: (answer in simplest form)

 $2\times5\frac{1}{4}$  

•  $\frac{21}{2}$  

•  $10\frac{1}{2}$  

•  $\frac{42}{4}$  

•  $10\frac{1}{4}$  

Dividing Fractions

• Change any mixed number or whole number to an improper fraction

• Multiply by the reciprocal.

• KFC (Keep flip change)

Multiple Choice

What is the reciprocal of 6?

• $\frac{6}{1}$

• $\frac{1}{6}$

• $6.1$

• $1.6$

Multiple Choice

What is the reciprocal of

 $\frac{2}{5}$  ?

•  $\frac{5}{2}$  

•  $2.5$  

•  $\frac{2}{5}$  

•  $5.2$  

Multiple Choice

Evaluate:

 $\frac{7}{9}\div1\frac{1}{3}$  

•  $\frac{7}{12}$  

•  $\frac{21}{36}$  

•  $\frac{28}{27}$  

•  $1\frac{1}{27}$  

Multiple Choice

Evaluate:

 $2\div\frac{1}{4}$  

•  $8$  

•  $\frac{1}{2}$