Pre-Algebra!

GCF/LCM

100

Find the GCF of 24 and 36.

12

200

Find the GCF of 21 and 40.

1

300

Find the LCM of 15 and 30.

30

400

Find the LCM of 35 and 48.

1,680

500

Find the LCM of 19, 4, and 27.

2,052

To Add, or Subtract

100

15 + c = 20

c = 5

200

r - 1,078 = 4,562

r = 5,640

300

-5/8 + 7/9

11/72

400

x - 14 = -19

x = -5

500

22 - x + 3 + 2x = -6

x = -31

Don't Be So Negative!

100

5 + (-9) = ?

-4

200

13(-1)

-13

300

4 / -2 = ?

-2

400

-3 - (-3) = ?

0

500

5 - (-5) + 2(-4) = ?

2

Powers That Be

100

Simplify 8³ x 8⁸

8¹¹

200

Simplify 9¹¹ x 9¹⁰ x 9⁴

9²⁵

300

Simplify x¹⁸/x²

x¹⁶

400

Simplify (14x²y⁵z¹⁴⁾/(28x⁶y²z¹³)

(y³z)/(2x⁴)

500

Evaluate for x = 2, y = 3, z = 4:

2x^-3y⁰z²

4

"Dear Algebra, Please stop asking us to find your ex."

100

2x + 3 = 19

x = 8

200

2(x - 3) = 2

x = 4

300

x ÷ 4 = 32

x = 128

400

-5.6 - x = -7

x = 1.4

500

Find the value of x:

(1/2)x + (3/8)x = 14

x = 16

Fractions

100

2/3 times 1/3

2/9

200

2 3/7 divide 1 1/3

51/28 or 1 23/28

300

Simplify: 

99/225

11/25

400

Which is larger? 

22/43 or 10/19

10/19

500

Put in order from Smallest to Largest: 

1/5 3/4 7/10 4/5

1/5 7/10 3/4 4/5

Surprise!

100

Write the scientific notation: 

35,210,000,000

3.521 X 10^10

200

Find the scientific notation: 

0.0000375

3.75 X 10^-5

300

Express as a mixed number: 32/5

6 and 2/5

400

36 - 18 ÷ 2 x 3 + 8 = ?

17

500

A field trip costs 75 dollars for the bus, plus 5 dollars per person for a ticket and 4 dollars per person for lunch. The total cost of the trip is 174 dollars. How many people came?

11 people