ITBS Math Concepts and Estimation 2 — Questions and Answers
Question 1: Which fraction is equivalent to 0.6?
- 1/6
- 3/5 (Correct answer)
- 2/3
- 6/100
Correct answer: 3/5
0.6 = 6/10, which simplifies to 3/5.
Question 2: A swimming pool holds 12,500 gallons of water. About how many gallons are in the pool when it is 3/4 full?
- 3,000 gallons
- 6,250 gallons
- 9,375 gallons (Correct answer)
- 10,000 gallons
Correct answer: 9,375 gallons
3/4 × 12,500 = 9,375 gallons.
Question 3: Which expression is equal to 5²?
- 5 × 2
- 5 + 5
- 5 × 5 (Correct answer)
- 2 × 2 × 2 × 2 × 2
Correct answer: 5 × 5
5² means 5 raised to the power of 2, which equals 5 × 5 = 25.
Question 4: Which is the best estimate for 612 ÷ 29?
- 10
- 20 (Correct answer)
- 30
- 40
Correct answer: 20
Rounding to 600 ÷ 30 = 20, making 20 the best estimate.
Question 5: A number is divisible by both 2 and 3. Which number could it be?
- 14
- 21
- 36 (Correct answer)
- 46
Correct answer: 36
36 is divisible by 2 (36÷2=18) and by 3 (36÷3=12), making it divisible by 6.
Question 6: What is the perimeter of a square with a side length of 9 inches?
- 18 inches
- 27 inches
- 36 inches (Correct answer)
- 81 inches
Correct answer: 36 inches
A square has 4 equal sides, so the perimeter = 4 × 9 = 36 inches.
Question 7: Which of the following numbers is prime?
- 15
- 21
- 37 (Correct answer)
- 49
Correct answer: 37
37 has no factors other than 1 and itself, making it a prime number.
ITBS Math Concepts and Estimation 2
Which fraction is equivalent to 0.6?