8th Grade Final Exam A (Practice,ungraded)

What are the greatest common factor, GCF, and least common multiple, LCM, of 6, 8, and 10?

• GCF = 2 LCM = 120
• GCF = 120 LCM = 2
• GCF = 40 LCM = 2
• GCF = 10 LCM = 10

Which sign makes the statement true? |–151| ??? |–140|

• >
• =
• <
• Cannot be determined

Evaluate: -2 × 4 + -7

• -15
• 15
• -9
• 9

• 5^4

• 5^14

• 5^0

• 5^-4

Write the product in scientific notation (15 × 10^5)(9 × 10^1)

• 1.35 × 10^8
• 135 × 10^6
• 135 × 10^8
• 1.35 × 10^6

The cube root of 62 is between what two whole numbers?

• 3 and 4
• 62 is a perfect cube
• 2 and 3
• 4 and 5

• <

• >

• =

• Cannot be determined

Evaluate: -2 × 4 + -7

• -15
• 15
• -9
• 9

Which number is irrational?

Leslie drew a scale drawing of a city park. In real life, the soccer field is 121 meters long. It is 187 millimeters long in the drawing. Leslie used a scale of 17mm : x meters. What is x?

• 11
• 10
• 12
• 14