ISASP Mathematics 3 — Questions and Answers
Question 1: If y = 3x – 5, what is y when x = 4?
- 7 (Correct answer)
- 12
- 17
- 2
Correct answer: 7
y = 3(4) – 5 = 12 – 5 = 7.
Question 2: A triangle has angles measuring 45° and 60°. What is the measure of the third angle?
- 75° (Correct answer)
- 80°
- 90°
- 105°
Correct answer: 75°
The sum of angles in a triangle is 180°, so 180 – 45 – 60 = 75°.
Question 3: Which expression is equivalent to 5(x + 3)?
- 5x + 3
- 5x + 8
- 5x + 15 (Correct answer)
- x + 15
Correct answer: 5x + 15
Using the distributive property: 5·x + 5·3 = 5x + 15.
Question 4: A table shows that for every 2 cups of flour, a recipe needs 3/4 cup of sugar. How much sugar is needed for 8 cups of flour?
- 2 cups
- 3 cups (Correct answer)
- 1.5 cups
- 4 cups
Correct answer: 3 cups
8 cups of flour is 4 times 2 cups, so sugar = 4 × 3/4 = 3 cups.
Question 5: On a coordinate plane, point A is at (2, –3) and point B is at (2, 5). What is the distance between A and B?
- 3
- 5
- 8 (Correct answer)
- 10
Correct answer: 8
Since the x-coordinates are the same, distance = |5 – (–3)| = 8.
Question 6: What is 15% of 260?
- 36
- 39 (Correct answer)
- 42
- 45
Correct answer: 39
15% of 260 = 0.15 × 260 = 39.
Question 7: A cylinder has a radius of 3 cm and a height of 10 cm. Which expression gives its volume?
- π × 3 × 10
- π × 9 × 10 (Correct answer)
- 2π × 3 × 10
- π × 6 × 10
Correct answer: π × 9 × 10
Volume of a cylinder = πr²h = π × 3² × 10 = π × 9 × 10.
ISASP Mathematics 3
If y = 3x – 5, what is y when x = 4?