MoGEA Test Number Sense and Operations 1 — Questions and Answers
Question 1: What is 3/8 expressed as a decimal?
- 0.325
- 0.375 (Correct answer)
- 0.385
- 0.425
Correct answer: 0.375
Dividing 3 by 8 gives 0.375, because 8 × 0.375 = 3.
Question 2: Which of the following is equivalent to 40%?
- 4/100
- 2/5 (Correct answer)
- 4/5
- 5/2
Correct answer: 2/5
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)?
- −36
- −15
- 36 (Correct answer)
- 15
Correct answer: 36
The product of two negative numbers is positive: −12 × −3 = 36.
Question 4: Which number is a prime number?
- 51
- 57
- 59 (Correct answer)
- 63
Correct answer: 59
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?
- 12
- 18
- 24 (Correct answer)
- 48
Correct answer: 24
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).
Question 6: A store sells a jacket originally priced at $80 at a 25% discount. What is the sale price?
- $20
- $55
- $60 (Correct answer)
- $65
Correct answer: $60
25% of $80 = $20, so the sale price is $80 − $20 = $60.
MoGEA Test Number Sense and Operations 1
What is 3/8 expressed as a decimal?