Unit 1: Review

Scientific Notation

100

Big numbers have _________ exponents and small numbers have _________ exponents

positive; negative

200

Write the number in scientific notation:

35000000

3.5 x 10⁷

300

Write the number in standard notation:

2.6 x 10^-4

0.00026

400

Write the number in standard notation:

4.5 x 10⁰

4.5

500

Write the number in scientific notation:

432.0 x 10³

4.32 x 10⁵

Sig Figs

100

How many sig figs are in the number: 

302.0010

7

200

How many sig figs are in the number:

0.00000043

2

300

Write your answer with the appropriate amount of sig figs:

23.45612 + 14.235

37.691

400

Write your answer with the appropriate amount of sig figs:

456.78/23.45

19.48

500

Round the number to have 4 sig figs:

453.0934

453.1

Conversions

100

Convert 1200 Dg to g

12000g

200

How many mm are in 345in? (1in = 2.54cm)

8760mm

300

How many seconds do students spend in school if a school year is 180.0 days?

15550000 seconds 

or 

1.555 x 10⁷ seconds

400

How many ft² is 641.0in²

4.451ft²

500

 A student decides to trade away his 36.0 cookies during lunch. First, he trades all his cookies away for a rate of 3 cookies per 2 gatorade. Next, he exchanged all the gatorade at a rate of 1 gatorade for 4 bags of gold fish. After, he decided to sell all the gold fish for $2. How much money did he make?

$192

Density

100

How do you solve for mass using the density equation?

mass = density x volume

200

What is the density of an unknown object with a mass of 3.5g and a volume of 4.0cm³

0.88 g/cm³

300

If the density of an object is 0.05 g/cm³, will it float or sink in water? Why?

Float; has a lower density than water (1 g/cm³)

400

A cube is found to have a side length of 0.60cm and a mass of 1.66g, what is the density of the cube?

7.2 g/cm³

500

An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2.0 ml. The height of the water rose to 7.0 ml. If the mass of the stone was 25 g, what was its density?

5.0 g/mL

Misc

100

A group of students measured a tree using various methods. If the actual height of the tree is 16.7ft, describe the data using accuracy and precision.

Data: 17.8ft, 19.3ft, 16.4ft, 17.8ft

Low accuracy and precision

200

What is the acronym for the metric units?

King Henry Died By drinking chocolate milk

300

A student estimated the mass of an object to be 250g, but after weighing it, the actual mass was found to be 240g. What is the percent error?

4.2%

400

Using the graph on the board, calculate the average density of the object (Round to 3 sf)

2.13 g/cm³

500

Using the graph on the board, estimate the volume of the object with a mass 225g

110cm³