Lesson 12

Multiple Choice

Solve
$$\left(-10\right)\left(-3^2\right)$$

• 90

• 60

• -90

• -60

Poll

Finish the statement

Alabama is .....

• The BEST!

• The absolute worst!

• Fine.

• No Comment.

Multiple Choice

What is the decimal form of the fraction 1/100

• 0.1

• 0.10

• 1.0

• 0.01

Multiple Choice

What is the fractions form of the decimal 3.75?

• 3/2
• 7/2
• 15/4
• 1/4

Multiple Choice

$$\frac{1}{9\ }\times\frac{1}{4}$$  

• $$\frac{1}{13}$$  

• $$\frac{1}{36}$$  

• $$\frac{2}{13}$$  

Multiple Choice

$$\frac{3}{10}\times\frac{3}{6}$$  

• $$\frac{9}{60}$$  

• $$\frac{3}{20}$$  

• $$\frac{6}{16}$$  

Multiple Choice

18.7 x 6 = _

• 112.2
• 11.22
• 112.1
• 1.121

Multiple Choice

3.7 x 0.43 = 

•  1.591
• 15.91
• 18.7
• 1.87

Fill in the Blank

$$-\frac{1}{9}\left(-27\right)$$

Fill in the Blank

A freezer in a lab is set so that the temperature changes at a rate of -1.6 C every hour. What is the change in the temperature after 4 1/4 hours? Write your answer as a decimal.

-

.

Multiple Choice

Find $$-0.2\left(4.75\right)$$

• -1.2
• 0.95
• -0.5
• -0.95

Multiple Choice

Amare drops a probe into a lake. The elevation of the probe changes by $$-1\ \frac{1}{2}$$ feet every second. The probe takes 50 seconds to reach the bottom of the lake. How deep is the lake?

• -50 feet

• -75 feet

• 75 feet

• -25 feet

Multiple Choice

Salvador drives 6.5 miles to his aunt's house. For every mile Salvador drives, the amount of gas in the car's gas tank changes by $$-0.04$$ gallon. What is the total change in the gallons of gas in the car's tank?

• -0.20
• -0.26
• 0.26

• -0.30

Multiple Choice

Solve

$$-23.5\ \times0.3$$

• -7.05
• -70.5

• 7.05

• 70.5

Multiple Choice

Solve $$0.75\ \times-\frac{4}{3}$$

• 0.5

• -1
• 1
• -0.5

Multiple Choice

Convert into a fraction greater than one (improper fraction)

$$2\ \frac{4}{5}$$

• 10/5

• 5/14

• 14/5

Multiple Choice

How do you divide a fraction by a fraction?

• Add the two fractions together.
• Subtract the second fraction from the first.
• Multiply both fractions together without changing them.
• Multiply the first fraction by the reciprocal of the second fraction.

Fill in the Blank

What is $$-6\ \frac{4}{5}\div\left(-\frac{2}{5}\right)$$

Multiple Choice

14.28 ÷ 4.2

• 3.4
• 3.6
• 3.7
• 3.5

Multiple Choice

1.68 ÷ 0.8

• 2.2
• 2.1
• 2.3
• 2

Multiple Choice

5 ÷ 0.2 =

• 10
• 25
• 1
• 2.5

Multiple Choice

8.75 ÷ 0.01 =

• 875
• 87500
• 87.5
• 0.875

Multiple Choice

1.8 ÷ 0.6

• 0.6
• 3
• 0.3
• 0.96

Fill in the Blank

What is the value of m?

$$-\frac{1}{2}\div\left(-\frac{3}{2}\right)=m$$ $$\frac{1}{3}$$

/

Draw

Write the decimal as a fraction in simplest form.

3.8

Draw

Convert the fraction into an improper fraction.

$$2\ \frac{3}{5}$$

Draw

Solve and simplify.

$$-\frac{1}{2}\div\left(-\frac{3}{2}\right)$$

Work out the problem in your comp notebook.

Multiple Choice

$$\left(-\frac{2}{3}^{^{15}}\right)$$

• Will be positive.

• Will be negative.

• I'm not sure.

Open Ended

BIG IDEAS! We have talked alot about multiplying and dividing fractions and decimals. What is one BIG IDEA/take away/important to remember concept you have learned.

Draw

$$4.8\div\left(-0.4\right)=$$

Draw

Write 3.25 as a fraction in simplest form.

Multiple Choice

Which expression is equivalent to

$$3.4\ \times\frac{1}{3}$$

• $$\frac{3}{4}\times\frac{1}{3}$$

• $$\frac{34}{10}\times\frac{1}{3}$$

• $$\frac{34}{10}\times\frac{3}{1}$$

• $$\frac{3}{4}\times\frac{3}{1}$$

Multiple Choice

Kelly fill a bird feeder with seeds. As birds visit the feeder, the height of the seeds changes from 13.6 cm to 11.1 cm over a period of $$6\ \frac{1}{4}$$ h. What rational number shows the average change in the height of the seeds each hour?

• $$-\frac{2.5}{6.25}$$

• $$\frac{6.25}{-2.5}$$

• $$\frac{11.1}{13.6}$$

• $$\frac{-13.1}{6.25}$$

Multiple Choice

Which expression is equivalent to

$$2.5\ \div\frac{2}{5}$$

• $$\frac{2}{5}\times\frac{2}{5}$$

• $$\frac{2}{5}\times\frac{5}{2}$$

• $$\frac{25}{10}\times\frac{2}{5}$$

• $$\frac{25}{10}\times\frac{5}{2}$$

Multiple Select

Solve $$2.5\div\frac{2}{5}$$

• $$\frac{4}{25}$$

• 1

• 6.25

• $$\frac{125}{20}$$