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Find all digits a (0–9) such that the three-digit number 5a2 is divisible by 3. Select all that apply.
Correct answer(s):
- 2
- 5
- 8
Which number is greater: 3.2 × 10^4 or 2.8 × 10^5
Correct answer(s):
- 2.8 × 10^5
Determine whether √49 is rational or irrational.
Correct answer(s):
- Rational
Express 0.000452 in proper scientific notation.
Correct answer(s):
- 4.52 × 10^-4
Find the least common multiple (LCM) of 12 and 18.
Correct answer(s):
- 36
Select all pairs of positive integers that have HCF 6 and LCM 180
Correct answer(s):
- 12 and 90
- 18 and 60
- 30 and 36
A price increases from $240 to $300. What is the percentage increase
Correct answer(s):
- 25%
Express 0.555… (repeating) as a fraction in lowest terms.
Correct answer(s):
- 5/9
What is the remainder when 2,345 is divided by 7
Correct answer(s):
- 0
Find the place value of the digit 6 in the number 46,309.
Correct answer(s):
- 6,000
Determine whether 97 is a prime or composite number.
Correct answer(s):
- Prime
What is the sum of all integers from 1 to 100 inclusive
Correct answer(s):
- 5050
Express the fraction 7/8 as a decimal.
Correct answer(s):
- 0.875
Find the highest common factor (HCF/GCF) of 84 and 126.
Correct answer(s):
- 42
Find the least common multiple (LCM) of 12 and 18.
Correct answer(s):
- 36
Find the pair(s) of consecutive integers whose product is 56. Select all correct pairs.
Correct answer(s):
- 7 and 8
- -8 and -7
Round the number 7,845 to the nearest hundred.
Correct answer(s):
- 7,800
Find the greatest common divisor (GCD) of 84 and 126.
Correct answer(s):
- 42
Evaluate the expression: (-3) × 4 + 18 ÷ 3 – (-5).
Correct answer(s):
- -1
How many positive divisors does 360 have, including 1 and 360?
Correct answer(s):
- 24