NeSA Mathematics 2 — Questions and Answers
Question 1: What is 25% of 160?
- 30
- 35
- 40 (Correct answer)
- 45
Correct answer: 40
25% means 25/100 = 0.25, and 0.25 × 160 = 40.
Question 2: Which expression represents 'six less than twice a number n'?
- 6 − 2n
- 2n − 6 (Correct answer)
- 2(n − 6)
- 6n − 2
Correct answer: 2n − 6
'Twice a number n' is 2n, and 'six less than' means subtract 6, giving 2n − 6.
Question 3: A number line shows points at −3, 0, and 4. Which order lists them from least to greatest?
- 4, 0, −3
- 0, −3, 4
- −3, 0, 4 (Correct answer)
- −3, 4, 0
Correct answer: −3, 0, 4
On a number line, values increase from left to right, so the correct order is −3, 0, 4.
Question 4: What is the least common multiple (LCM) of 4 and 6?
- 8
- 12 (Correct answer)
- 24
- 2
Correct answer: 12
The multiples of 4 are 4, 8, 12… and multiples of 6 are 6, 12…, so the LCM is 12.
Question 5: A store sells notebooks for $2.50 each. How much do 8 notebooks cost?
- $18.00
- $20.00 (Correct answer)
- $16.00
- $22.50
Correct answer: $20.00
Multiply the unit price by the quantity: $2.50 × 8 = $20.00.
Question 6: Which shape has exactly 4 right angles and 4 equal sides?
- Rectangle
- Rhombus
- Square (Correct answer)
- Trapezoid
Correct answer: Square
A square has 4 equal sides and 4 right angles, distinguishing it from a rhombus which may not have right angles.
NeSA Mathematics 2
What is 25% of 160?