Chapter 4 Review - Rational Numbers

Common denominators are needed for...

(Select all that apply.)

• Addition

• Subtraction

• Multiplication

• Division

• All of the above

To convert a fraction to a decimal, you can...

(Select all that apply.)

• Divide the numerator by the denominator.

• Divide the denominator by the numerator.

• Use a place value fraction.

• Multiply by 100.

• All of the above.

To add two negative numbers, you should...

• Add and keep the negative sign.

• Add and make the answer positive.

• Subtract and keep the sign of the number with the larger absolute value.

• Subtract and keep the sign of the number with the smaller absolute value.

To add a positive and a negative, you should...

• Subtract and keep the sign of the number with the larger absolute value.

• Subtract and keep the sign of the number with the smaller absolute value.

• Add and keep the sign of the number with the larger absolute value.

• Add and keep the sign of the number with the smaller absolute value.

To divide fractions, you should...

• Multiply by the reciprocal of the second fraction.

• Divide the numerators and denominators.

• Add the numerators and divide the denominators.

• Flip the first fraction and multiply.

To write a decimal in fraction form, you should...

• Identify the place value where the decimal ends and use that as the denominator.

• Divide by 100 and write the result over 1.

• Use long division.

• It is not possible to do this.

Add

 $\frac{-3}{10}+\frac{2}{3}$  

•  $-\frac{1}{13}$  

•  $\frac{11}{30}$  

•  $\frac{29}{30}$  

•  $-\frac{29}{30}$  

Multiply and write the answer in simplest form.

 $4\frac{4}{5}\times\left(-\frac{1}{8}\right)$  

•  $4\frac{1}{10}$  

•  $-2\frac{1}{10}$  

•  $2\frac{1}{10}$  

•  $-4\frac{4}{40}$  

What is 0.24 written as a fraction in simplest form?

• $\frac{24}{100}$

• $\frac{12}{50}$

• $\frac{6}{25}$

• $\frac{12}{25}$

Use keep, change, change then solve.

 $-2\frac{3}{10}-\frac{5}{8}$  

•  $-2\frac{4}{9}$  

•  $-2\frac{37}{40}$  

•  $-1\frac{27}{40}$  

•  $1\frac{27}{40}$