OSAT OSAT Elementary Mathematics Concepts 2

Question 1

A student has 3 groups of 4 apples. Which expression represents the total number of apples?

Accepted Answer

3 × 4

Answer

Multiplication represents equal groups, so 3 groups of 4 is written as 3 × 4 = 12.

Question 2

What is the value of the digit 7 in the number 4,782?

Accepted Answer

700

Answer

In 4,782 the digit 7 is in the hundreds place, giving it a value of 700.

Question 3

Which fraction is equivalent to 1/2?

Accepted Answer

4/8

Answer

4/8 simplifies to 1/2 because both the numerator and denominator are divided by 4.

Question 4

A rectangle has a length of 8 cm and a width of 5 cm. What is its area?

Accepted Answer

40 cm²

Answer

Area of a rectangle = length × width = 8 × 5 = 40 cm².

Question 5

Which number is prime?

Accepted Answer

23

Answer

23 is prime because it has no factors other than 1 and itself.

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