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Factors of a Number Quiz

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Questions and Answers

What are factors of a number?

Integers that divide into the number with no remainder (correct)
Fractions or decimals that divide into the number with no remainder
Numbers that can only be multiplied to produce the given number
Non-integer values that divide into the number with no remainder

What is a prime number?

A number that can only be multiplied by 1 to produce itself
A number with exactly two factors, 1 and itself (correct)
A number that is not divisible by any other numbers
A number with more than two factors

What are the factors of 36?

$1, 2, 3, 5, 6, 9, 12, 18, 36$
$1, 2, 3, 4, 6, 9, 12, 18, 36$ (correct)
$1, 2, 3, 4, 6, 8, 12, 16$
$1, 2, 3, 4, 6, 8, 12, 24$

What are the prime factors of $24$?

$2^2 \times 3$ (C) Signup and view all the answers

Which statement about composite numbers is correct?

Composite numbers have more than two factors (C) Signup and view all the answers

What does it mean to find the prime factorization of a number?

To write the number as a product of only prime factors (C) Signup and view all the answers

What is the prime factorization of 80?

$80 = 2 \times 2 \times 2 \times 2 \times 5$ (C) Signup and view all the answers

What method is sometimes called the ladder method or upside-down division for finding prime factorization?

Dividing the number by its prime factors and writing factors on the right side (D) Signup and view all the answers

What is the prime factorization of 42 using a factor tree?

$42 = 2 \times 3 \times 7$ (D) Signup and view all the answers

How would you find the prime factorization of 120 using a general method?

$120 = 2 \times 2 \times 2 \times 3 \times 5$ (D) Signup and view all the answers