Learn on PengienVision, Mathematics, Grade 4Chapter 8: Extend Understanding of Fraction Equivalence and Ordering

Lesson 6: Compare Fractions

Property.

Section 1

Concept: Comparing Fractions Requires Same-Sized Wholes

Property

To accurately compare fractions or determine if they are equivalent, the wholes they are parts of must be identical in size.
A fraction's value is relative to the size of its whole.

Examples

Section 2

Choosing a Fraction Comparison Strategy

Property

To efficiently compare two fractions, choose a strategy by checking for relationships:

  1. Common Denominator: Use when denominators are the same or one is a multiple of the other.
  2. Common Numerator: Use when numerators are the same or one is a multiple of the other.
  3. Benchmark Comparison: Use when one fraction is clearly greater than a benchmark (like 12\frac{1}{2}) and the other is clearly less.

Examples

Section 3

Compare Fractions on a Number Line

Property

To compare two fractions, ab\frac{a}{b} and cd\frac{c}{d}, in a real-world context, plot them on a number line.
The fraction located further to the right is the greater fraction.
If ab\frac{a}{b} is to the right of cd\frac{c}{d}, then ab>cd\frac{a}{b} > \frac{c}{d}.
If they are at the same point, then ab=cd\frac{a}{b} = \frac{c}{d}.

Examples

Lesson overview

Expand to review the lesson summary and core properties.

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Section 1

Concept: Comparing Fractions Requires Same-Sized Wholes

Property

To accurately compare fractions or determine if they are equivalent, the wholes they are parts of must be identical in size.
A fraction's value is relative to the size of its whole.

Examples

Section 2

Choosing a Fraction Comparison Strategy

Property

To efficiently compare two fractions, choose a strategy by checking for relationships:

  1. Common Denominator: Use when denominators are the same or one is a multiple of the other.
  2. Common Numerator: Use when numerators are the same or one is a multiple of the other.
  3. Benchmark Comparison: Use when one fraction is clearly greater than a benchmark (like 12\frac{1}{2}) and the other is clearly less.

Examples

Section 3

Compare Fractions on a Number Line

Property

To compare two fractions, ab\frac{a}{b} and cd\frac{c}{d}, in a real-world context, plot them on a number line.
The fraction located further to the right is the greater fraction.
If ab\frac{a}{b} is to the right of cd\frac{c}{d}, then ab>cd\frac{a}{b} > \frac{c}{d}.
If they are at the same point, then ab=cd\frac{a}{b} = \frac{c}{d}.

Examples