Select all prime numbers from the list: 21, 29, 37, 49, 51.
Correct answer(s):
- 29
- 37
Subject
Mathematics
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Quizzes in Mathematics for Grade 8
Convert the binary number 11010 to its decimal equivalent.
Correct answer(s):
- 26
Which of the following numbers is rational but not an integer
Correct answer(s):
- 2/3
Find the smallest positive integer x such that 3x + 1 is divisible by 7.
Correct answer(s):
- 2
Express the decimal 0.125 as a fraction in simplest form.
Correct answer(s):
- 1/8
Determine the highest common factor (HCF) or greatest common divisor (GCD) of 48 and 180.
Correct answer(s):
- 12
Find the least common multiple (LCM) of 36 and 84.
Correct answer(s):
- 252
Which of the following numbers is irrational: 22/7, sqrt(2), 0.125, 3/4.
Correct answer(s):
- sqrt(2)
Express 12.5% as a fraction in simplest form.
Correct answer(s):
- 1/8
Determine whether 73,935 is divisible by 9.
Correct answer(s):
- Yes
Compute 3 2/5 + 1 4/5 and give the result in simplest form.
Correct answer(s):
- 5 1/5
Select all prime numbers from the list: 15, 17, 21, 23.
Correct answer(s):
- 17
- 23
Express 0.875 as a fraction in simplest form.
Correct answer(s):
- 7/8
Find the highest common factor (HCF) of 84 and 126.
Correct answer(s):
- 42
Find the least common multiple (LCM) of 18 and 24.
Correct answer(s):
- 72
Round 6,748 to the nearest ten.
Correct answer(s):
- 6,750
Find the value of the digit 5 in the number 83,547.
Correct answer(s):
- 500
Calculate the remainder when 2^10 is divided by 5.
Correct answer(s):
- 4
Find the positive square root of 289.
Correct answer(s):
- 17
Convert the decimal 0.045 to a percentage.
Correct answer(s):
- 4.5%