G07_4.5: Divide Rational Numbers

Divide Rational Numbers

Lesson 5

Focus Question

Divide rational numbers

Vocabulary

● Multiplicative inverse

Multiple Choice

In the equation  $$504\ \div\ 12$$  , 12 is the ________.

• divisior

• dividend

• quotient

• remainder

Multiple Choice

The answer to a division equation is the ___________.

• divisor

• dividend

• quotient

• remainder

Multiple Choice

To check the answer to a division equation, what operation do you use?

• Subtraction

• Multiplication

• Remainders

• Addition

Multiple Choice

$$335\ \div\ 5$$  

• 6 r 7

• 60

• 67

• 77 r 6

Learn: Divide Rational Numbers

The rules to divide rational numbers are the same for dividing
positive and negative integers, decimals and fractions.

Multiple Choice

What is the recriprocal of 4/5

• 4/5

• 5/4

• 5/1

• 1/5

Multiple Choice

What is the recriprocal of 5

• 5/1

• 1/5

Multiple Choice

Find the reciprocal1/8

• 8

• 1/8

Multiple Choice

What is the reciprocal of 3/10?

• 3/10

• 10/3

• 3 1/3

• 3.333

Learn: Divide Rational Numbers

Keep-Change-Flip

Learn: Divide Rational Numbers

Learn: Divide Rational Numbers

Always make both
improper fraction

Multiple Choice

Tell whether the expression is positive or negative without evaluating.

• Positive

• Negative

Multiple Choice

Tell whether the expression is positive or negative without evaluating.

• Positive

• Negative

Multiple Choice

$$369\ \div\ \left(-9\right)$$ Divide.

• 41

• -41

• 54

• -54

Learn: Divide Rational Numbers in Different Forms

Learn: Divide Rational Numbers in Different Forms

Learn: Divide Rational Numbers in Different Forms

Multiple Select

Which of these products is positive? Select all that apply.

• $$-0.2\ \times\ \left(12.5\right)$$

• $$-\frac{1}{12}\ \times\ \left(-6\frac{1}{2}\right)$$

• $$3.2\ \times\ \left(-\frac{1}{900}\right)$$

• $$-3\frac{1}{2}\ \times\ 0$$

• $$-4.7\ \times\ \left(-1\right)$$

Multiple Choice

2 ÷ ¼

• 7

• 8

• 9

• 10

Multiple Choice

⅚÷ (-½)

• -5/3

• 5/12

• -5/12

• 5/3

Multiple Choice

-⅘ × -⅙

• -2/15

• 30/4

• 2/15

• -30/4

Complete the Textbook Check Questions in

your Textbook on the correct pages.

Then check your answers on the next slide

and mark your work in your book.

Check Questions (Pg 214, 216 )

Check Questions (Pg 214, )

CORRECT

CORRECT

CORRECT