Kincaid's Algebra 1 Chapter 1 Mid Quiz Review

Simple Equations

100

x - 10 = 20

x = 30

200

3 + x = 7

x = 4

300

-5x = 35

x = -7

400

x/10 = 5

x = 50

500

5 - x = 11

x = -6

Multi Step Equations

100

2x + 3 = 11

x = 4

200

103 = 3x + 10

x = 31

300

x/4 - 5 = 20

x = 100

400

50 = x/3 + 40

x = 30

500

-20 = 1/2x + 10

x = -60

Equations - VOBS

100

7x - 4 = 20 + 3x

x = 6

200

-5 = 25 - 9x - 6x

x = 2

300

4x + 1 - 8x = 37

x = -9

400

27 - 7x = 2x

x = 3

500

4(2x - 5) = 3x + 10

x = 6

Proportions

100

2/r = 12/18

x = 3

200

5/15 = 30/x

x = 90

300

10/x = 25/60

x = 24

400

A woman is 5'0 and casts a shadow of 12 feet. How tall is a tree if it casts a shadow of 36 feet? 

 15 feet

500

Convert 20 Meters to millimeters

1 meter = 100 cm

1 cm = 10 mm

20,000 mm

Estimating

100

Mrs. Kincaid has 122 students in 5 classes. Estimate how many students Mrs. Kincaid has per class. 

About 24 students per class (25 would also be ok)

200

Mrs. Kincaid bought 5.3 pounds of apples for $11.45. Estimate what the price per pound of apples is. Round to the nearest penny.

About $2.16 per pound

300

An object weighs exactly 9 pounds. Madley measures the object to weigh 9.014 pounds and Zoey measures the object to weigh 8.97 pounds. Who has the most accurate measurement?

Madley

400

An object weighs exactly 11 pounds. Sarah measures the object to weigh 11.0284 pounds and Austin measures the object to weigh 10.98 pounds. Who has the most accurate measurement?

Austin

500

There are 87 homes in the neighborhood The water usage for the neighborhood last month was 7,488. ESTIMATE the water usage per home. 

About 86 gallons per home