Exam Review Questions

The number 84, 368 correct to two significant figures is

• 84

• 85

• 84000

• 85000

Correct to 1 decimal place, 85.19 is

• 85.1

• 85.2

• 85

• 86

Evaluate -8 + 5 - 7.

• -10

• 10

• 4

• -4

What is the value of 5 + 3 × -4?

• -32

• 4

• -7

• -60

Which of the following digits in 1,769.248 is in the tenth's hundredths place?

• 7

• 4

• 8

• 1

The number 0.408 written in scientific notation is

• 40.8 × 10^2

• 40.8 × 10^-2

• 4.08 × 10^1

• 4.08 × 10^-1

• 8.74000

• 8.740

• 0.00874

• 8740

A bag of 54 sweets was shared in the ratio 7:2. What is the amount of the larger share?

• 42 sweets

• 54 sweets

• 12 sweets

• 486 sweets

A sum of money was divided among Mark and Anne in the ratio 5:3. If Mark received $75, what is the sum of money shared?

• $120

• $45

• $160

• $150

5 cups of water is needed for 3 spoons of Kool-aid. How many spoons of Kool-aid are needed for 15 cups of water?

• 15 spoons

• 1 spoon

• 9 spoons

• 12 spoons