Multiplying and Dividing Rational Numbers

Multiplying Rational Numbers

Sixth Grade

​Let's Warm Up

​Fill in the blank with the matching decimal or fraction.

Fill in the Blank

What is the fraction?

0.50

Fill in the Blank

What's the fraction?

0.75

Fill in the Blank

What's the decimal?

3/5

Fill in the Blank

What's the decimal?

5/20

Multiple Choice

Convert 0.17 into a simplified fraction

• $$\frac{17}{100}$$

• $$\frac{17}{10}$$

• $$\frac{17}{1000}$$

• $$\frac{8}{50}$$

Multiple Choice

Convert 1.3 into a simplified fraction

• $$\frac{1}{3}$$

• $$1\ \frac{3}{10}$$

• $$1\ \frac{1}{3}$$

• 13

Multiple Choice

Convert 2.05 into a simplified fraction

• $$\frac{25}{100}$$

• $$2\ \frac{1}{20}$$

• $$2\ \frac{1}{2}$$

• $$2\ \frac{5}{100}$$

Multiple Choice

Convert  $$4\ \frac{4}{5}$$   into a decimal

• 4.8

• 4.4

• 4.45

• 4.2

Multiple Choice

Convert 1.75 into a simplified fraction

• $$1\ \frac{3}{40}$$

• $$1\ \frac{75}{100}$$

• $$1\ \frac{75}{1000}$$

• $$1\ \frac{3}{4}$$

​Now let's practice multiplying and dividing ...

​What do you do when you see a fraction and a decimal in a multiplication problem?

​You choose to covert one so that you are working with both fractions and decimals.

​

Fill in the Blank

^{0.25 x 3/5}

Fill in the Blank

5/20 x 2.04

Fill in the Blank

 1.5 $$\div$$   6/20 =

Fill in the Blank

5/28 x 0.7 =

Multiple Choice

Turkey is $1.59 per pound at HEB.  Alora buys a turkey that is 8 ¹/₂ pounds_.   How much does Alora spend on turkey?

• $13.52

• $135.15

• $13.04

• $130.40