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Knihovna

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

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Poslední aktualizace 5 months ago
16 Dotazy
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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Otázka 1
1.

Match each number to its name.

Přetahovatelná položkaarrow_right_altOdpovídající položka

One thousandth

arrow_right_alt

1,000,000

One million

arrow_right_alt

0.01

Ten thousand

arrow_right_alt

1,000,000,000

One hundredth

arrow_right_alt

0.000001

One billion

arrow_right_alt

0.001

One millionth

arrow_right_alt

10,000

Otázka 2
2.

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

42,300

Otázka 3
3.

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

2,000

Otázka 4
4.

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

9,200,000

Otázka 5
5.

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

Four thousand

Otázka 6
6.

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

80 million

Otázka 7
7.

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

32 billion

Otázka 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.

Otázka 9
9.

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

The Milky Way contains about 300 billion stars.

Otázka 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.

Otázka 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.)

Otázka 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.)

Otázka 13
13.

Solve each of these equations.

2(3-2c)=30

Otázka 14
14.

Solve each of these equations.

3x-2=7-6x

Otázka 15
15.

Solve each of these equations.

31=5(b-2)

Otázka 16
16.

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