MoGEA Test Number Sense and Operations

Question 1

What is 3/8 expressed as a decimal?

Accepted Answer

0.375

Answer

Dividing 3 by 8 gives 0.375, because 8 × 0.375 = 3.

Question 2

Which of the following is equivalent to 40%?

Accepted Answer

2/5

Answer

40% = 40/100 = 2/5 when reduced to lowest terms by dividing both numerator and denominator by 20.

Question 3

What is the result of −12 × (−3)?

Accepted Answer

36

Answer

The product of two negative numbers is positive: −12 × −3 = 36.

Question 4

Which number is a prime number?

Accepted Answer

59

Answer

59 is prime because it has no factors other than 1 and itself; 51 = 3×17, 57 = 3×19, and 63 = 9×7.

Question 5

What is the least common multiple (LCM) of 6 and 8?

Accepted Answer

24

Answer

The LCM of 6 and 8 is 24 because 24 is the smallest number divisible by both 6 (24÷6=4) and 8 (24÷8=3).

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