• Numerator
• Denominator
• Like denominator
• Unlike denominator
• Equivalent fractions
• Mixed number
• Variable expression
• Reciprocal

Activity 1:

• Why does the denominator remain unchanged when adding or subtracting fractions with like denominators?

Activity 2:

Solve the following fraction problems. Check your work with a calculator.

• 1/5 of 25 =
• 2/5 of 25 =
• 1/4 of 40 =
• 3/4 of 40 =
• 1/4 of 1200 =