Chapter 4: Number Theory and Fractions

Is the number 43 prime or composite?

• Prime

• Composite

What is the prime factorization of 16?

• 2^4

• 2^3

• 4^2

• 8

Find the greatest common factor (GCF) of 6 and 15.

• 2

• 3

• 5

• 6

What is the equivalent fraction of 1/4 in higher terms?

• 2/8

• 2/3

• 2/12

• 3/12

Write 9/21 in lowest terms.

• 1/3

• 3/7

• 2/3

• 3/9

Find the least common denominator (LCD) of 1/4 and 1/8.

• 4

• 8

• 12

• 16

Write 11/6 as a whole number or a mixed number in simplest form.

• A) 1 5/6

• B) 2

• C) 1 1/6

• D) 2 1/6

Compare 5/9 and 7/9.

• <

• =

• >

Tom uses three 1–6 number cubes. How many ways will he find to roll the sum of 12?

• 20 ways

• 25 ways

• 30 ways

• 35 ways

Football practice lasted 2 1/6 hours yesterday. About how many hours was the football practice?

• 1 hour

• 2 hours

• 3 hours

• 4 hours