7th Grade Fall Final Math Pt. 4

Which of the following is a prime number: 39, 79, 98, or 108?

• 39

• 79

• 98

• 108

Write 3 5/6 as an improper fraction.

Find the missing number: 6/21 = 2/n.

Compare 5/6 and 2/3 using <, >, or =.

• <

• >

• =

Identify each number as prime, composite, or neither. 97

Find the GCF using prime factorizations. 54 = 2 × 3³ 30 = 2 × 3 × 5

Find the LCM using prime factorizations: 12, 24, and 80.

Reduce to lowest terms: 42/105.

Write each rational number as a reduced fraction. 25/1

What makes a number a PRIME number?

• It only has 2 factors 1 and itself.
• It is an even number.
  It is an odd number.
• Is is an odd number.
• It has more than two factors.