OSAT OSAT Elementary Mathematics Concepts 4

Question 1

A survey shows 12 out of 30 students prefer math. What fraction in simplest form represents this?

Accepted Answer

2/5

Answer

12/30 simplifies to 2/5 when both numerator and denominator are divided by 6.

Question 2

Which angle measures exactly 90°?

Accepted Answer

Right angle

Answer

A right angle measures exactly 90° and is often marked with a small square symbol.

Question 3

What is 15% of 200?

Accepted Answer

30

Answer

15% of 200 = 0.15 × 200 = 30.

Question 4

A recipe calls for 2/3 cup of sugar. If you triple the recipe, how much sugar is needed?

Accepted Answer

2 cups

Answer

2/3 × 3 = 6/3 = 2 cups of sugar.

Question 5

In a data set {4, 7, 7, 9, 13}, what is the mode?

Accepted Answer

7

Answer

The mode is 7 because it appears more frequently than any other value in the set.

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