Unit 2 Test Review!

Number Relationships

100

100 is how many times more than 2?

50

100

A German Shepherd weighs 10 times more than an average house cat. A house cat weighs 10.5lbs. How much does a German Shepherd weigh? 

105lbs

100

Which is bigger: 8km or 10,000m

10,000m 

100

Which is bigger: 4.5km, 450m, or 500,000cm

500,000cm

300

A snail moves 5 x 10^-3 km/h. How long would it take a snail to move 20 metres?

Four hours

Perfect Squares and Square Roots

100

What is the lowest, positive perfect square number?

1

100

Estimate the square root of 35 to one decimal place.

5.9 

100

Estimate the square root of 95 to one decimal place.

9.7

100

Estimate the square root of 111 to one decimal place.

10.5

300

What is 0.7²?

0.49

Powers of 10

100

Solve 6 x 10⁴.

What is 60,000

100

Solve 88 x 10².

What is 8800

100

In the equation 100 000 = 1 x 10ⁿ, what is the value of n?

5

100

What does 10^-1 equal?

0.1

300

Solve: 21 x 10⁴ divided by 10²

2100

Place Values

100

How many digits does a number in the ten millions have? 

8

100

What is the following number in expanded form: 15,729

10 000 + 5000 + 700 + 20 + 9

100

Write the following number in expanded form: 180,050

100 000 + 80 000 + 500

100

What is the following number in words: 5,290,375,405

Five billion, two hundred and ninety million, three hundred and seventy-five thousand, four hundred and five 

300

What is the following number in words: 200000000000000

Two hundred trillion 

Scientific Notation

100

Write 4.302 X 10⁹ in standard notation.

4,302,000,000

100

Write 28,383,000,000,000 in scientific notation

2.8383×10¹³

100

 Write 0.00034 in scientific notation

3.04 x 10^-4

100

Write 3.123x10^-4 in standard notation.

.0003123

300

Multiply (2×10³) and (4×10²) and express the answer in scientific notation.

8×10⁵