Pre Algebra Spiral Review

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

The radius of a circle is 8 inches. What is the diameter?

• 4 inches

• 6 inches

• 8 inches

• 16 inches

Simplify the expression.

• -3a + 4b

• 3a - 4b

• 23a - 10b

• -3a - 3b

Which inequality represents the graph?

Determine the value of the variable y in the equation.

• y = 1

Lauren had some pens and pencils. The ratio of pens to the number of pencils she had was 2 : 3. She gave away 3 pencils and the ratio of the number of pens to the number of pencils became 4 : 5. How many pens did Lauren have at the start?

• 3

• 12

• 8

• 6

Which list contains solutions to the inequality?

• -7, -6, -5

• -7, -8, -9

• -8, -9, -10

• -5, -4, -3

What is the circumference?

• 36

• 56.52

• 108

• 113.04

What two formulas can you use to find the circumference?

• C = π·d

• C = π·r²

• C = 2·π·r

• C = d²

If 10% is 18, what’s 100%?

• 1.8

• 180

• 1800

• 90