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Open Up - Grade 8 - Mathematics - Unit 7 - Lesson 9

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Last updated 11 months ago
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Question 1
1.

Match each number to its name.

Draggable itemarrow_right_altCorresponding Item
One hundredth
arrow_right_alt
1,000,000
One millionth
arrow_right_alt
0.01
One million
arrow_right_alt
1,000,000,000
One billion
arrow_right_alt
0.000001
Ten thousand
arrow_right_alt
0.001
One thousandth
arrow_right_alt
10,000
Question 2
2.

Write each expression as a multiple of a power of 10:

42,300

Question 3
3.

Write each expression as a multiple of a power of 10:

2,000

Question 4
4.

Write each expression as a multiple of a power of 10:

9,200,000

Question 5
5.

Write each expression as a multiple of a power of 10:

Four thousand

Question 6
6.

Write each expression as a multiple of a power of 10:

80 million

Question 7
7.

Write each expression as a multiple of a power of 10:

32 billion

Question 8
8.

Each statement contains a quantity. Rewrite each quantity using a power of 10.

There are about 37 trillion cells in an average human body.

Question 9
9.

Each statement contains a quantity. Rewrite each quantity using a power of 10.

The Milky Way contains about 300 billion stars.

Question 10
10.

Each statement contains a quantity. Rewrite each quantity using a power of 10.

A sharp knife is 23 millionths of a meter thick at its tip.

Question 11
11.

Each statement contains a quantity. Rewrite each quantity using a power of 10.

The wall of a certain cell in a plant is 4 nanometers thick. (A nanometer is one billionth of a meter.)

Question 12
12.

A fully inflated basketball has a radius of 12 cm. Your basketball is only inflated halfway. How many more cubic centimeters of air does your ball need to fully inflate? 

Estimate how many cubic centimeters this is by using 3.14 to approximate π. (Estimate to the nearest hundreth.)

Question 13
13.

Solve each of these equations.

2(3-2c)=30

Question 14
14.

Solve each of these equations.
3x-2=7-6x

Question 15
15.

Solve each of these equations.

31=5(b-2)

Question 16
16.

Graph the line going through (-6,1) with a slope of \frac{-2}{3} and write its equation.

"Source: Open Up Resouces (Download for free at openupresources.org.)"