Grade 4 · Fractions & Decimals · MAT-04-FD-001
Generate Equivalent Fractions
Represent and solve generate equivalent fractions problems using accurate mathematical models, notation, and reasoning.
Learning objectives
What you should be able to do
- Represent and solve generate equivalent fractions problems using accurate mathematical models, notation, and reasoning.
- Explain why a strategy for generate equivalent fractions works and verify the result with an independent check.
Prerequisite check
Make sure the foundation is ready.
A clear representation exposes the mathematical structure before a procedure is chosen.
Learn
Build the idea from meaning, not memorization.
Meaning and structure
Generate Equivalent Fractions depends on treating fractions as numbers built from equal-sized units. The numerator counts those units and the denominator defines their size; operations are valid only when the units being combined are compatible.
Represent the idea
The Math Box uses fraction model as the primary representation. Translate the situation into numbers or geometry first, identify what stays fixed, then change one quantity at a time and observe which relationships remain invariant.
Reason, calculate, and verify
A convincing solution names the quantities, shows the mathematical relationship, computes accurately, and includes a reasonableness check rather than relying on an unsupported answer.
Math Box · Interactive lesson
Touch the math. Change it. See what stays true.
Use the interactive model before and after the worked examples. Change the inputs, make a prediction, then use the model to test whether your reasoning holds.
Equal-Share Lab
Keep the whole fixed and change how many equal shares it contains.
- Build one example of generate equivalent fractions in the Math Box.
- Change one input and predict the effect before moving the control.
- Explain which mathematical relationship stayed invariant after the change.
Worked examples
Twenty different ways to see the concept work.
Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 2.
1/2 = 2/4Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 2/3 by multiplying numerator and denominator by 3.
2/3 = 6/9Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 3/4 by multiplying numerator and denominator by 4.
3/4 = 12/16Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 4/5 by multiplying numerator and denominator by 5.
4/5 = 20/25Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 5/6 by multiplying numerator and denominator by 2.
5/6 = 10/12Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 6/7 by multiplying numerator and denominator by 3.
6/7 = 18/21Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 7/8 by multiplying numerator and denominator by 4.
7/8 = 28/32Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 5.
1/2 = 5/10Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 1/3 by multiplying numerator and denominator by 2.
1/3 = 2/6Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 1/4 by multiplying numerator and denominator by 3.
1/4 = 3/12Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 3/5 by multiplying numerator and denominator by 4.
3/5 = 12/20Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 2/6 by multiplying numerator and denominator by 5.
2/6 = 10/30Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 1/7 by multiplying numerator and denominator by 2.
1/7 = 2/14Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 7/8 by multiplying numerator and denominator by 3.
7/8 = 21/24Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 4.
1/2 = 4/8Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 2/3 by multiplying numerator and denominator by 5.
2/3 = 10/15Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 2/4 by multiplying numerator and denominator by 2.
2/4 = 4/8Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 2/5 by multiplying numerator and denominator by 3.
2/5 = 6/15Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 4/6 by multiplying numerator and denominator by 4.
4/6 = 16/24Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Generate an equivalent fraction for 2/7 by multiplying numerator and denominator by 5.
2/7 = 10/35Multiplying numerator and denominator by the same nonzero number multiplies the fraction by 1, so its value stays unchanged.
Practice
Guided practice with hints
01Generate an equivalent fraction for 7/8 by multiplying numerator and denominator by 2.
Hint: Name the quantities and representation first; then choose the operation or comparison that preserves their meaning.
Answer: 7/8 = 14/16
02Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 3.
Hint: Name the quantities and representation first; then choose the operation or comparison that preserves their meaning.
Answer: 1/2 = 3/6
03Generate an equivalent fraction for 1/3 by multiplying numerator and denominator by 4.
Hint: Name the quantities and representation first; then choose the operation or comparison that preserves their meaning.
Answer: 1/3 = 4/12
04Generate an equivalent fraction for 3/4 by multiplying numerator and denominator by 5.
Hint: Name the quantities and representation first; then choose the operation or comparison that preserves their meaning.
Answer: 3/4 = 15/20
05Generate an equivalent fraction for 1/5 by multiplying numerator and denominator by 2.
Hint: Name the quantities and representation first; then choose the operation or comparison that preserves their meaning.
Answer: 1/5 = 2/10
06Generate an equivalent fraction for 1/6 by multiplying numerator and denominator by 3.
Hint: Name the quantities and representation first; then choose the operation or comparison that preserves their meaning.
Answer: 1/6 = 3/18
Practice
Independent practice
01Generate an equivalent fraction for 3/7 by multiplying numerator and denominator by 4.
Answer: 3/7 = 12/28
02Generate an equivalent fraction for 7/8 by multiplying numerator and denominator by 5.
Answer: 7/8 = 35/40
03Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 2.
Answer: 1/2 = 2/4
04Generate an equivalent fraction for 2/3 by multiplying numerator and denominator by 3.
Answer: 2/3 = 6/9
05Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 2.
Answer: 1/2 = 2/4
06Generate an equivalent fraction for 2/3 by multiplying numerator and denominator by 3.
Answer: 2/3 = 6/9
07Generate an equivalent fraction for 3/4 by multiplying numerator and denominator by 4.
Answer: 3/4 = 12/16
08Generate an equivalent fraction for 4/5 by multiplying numerator and denominator by 5.
Answer: 4/5 = 20/25
Common mistakes
Learn to catch the error, not just the answer.
Track the size of the fractional unit first; fractions can be combined only when the units are compatible.
Compare complete fraction values with a model, benchmark, common denominator, or cross-product reasoning.
Applications & challenge
Use the idea beyond a single exercise.
Applications
- Scale recipes, measurements, money, and data while preserving the meaning of the unit.
- Compare quantities that are not whole numbers in science, construction, shopping, and measurement.
Challenge problems
Generate an equivalent fraction for 5/6 by multiplying numerator and denominator by 2.
5/6 = 10/12
Generate an equivalent fraction for 6/7 by multiplying numerator and denominator by 3.
6/7 = 18/21
Generate an equivalent fraction for 7/8 by multiplying numerator and denominator by 4.
7/8 = 28/32
Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 5.
1/2 = 5/10
Flashcards
Retrieve it from memory.
Flashcards
Card 1 of 4
Game mode
Grade 4 Math Strategy Sprint
Solve and explain generate equivalent fractions problems accurately, then check each result with a second method.
Practice
Mastery check
01Generate an equivalent fraction for 1/3 by multiplying numerator and denominator by 2.
Answer: 1/3 = 2/6
02Generate an equivalent fraction for 1/4 by multiplying numerator and denominator by 3.
Answer: 1/4 = 3/12
03Generate an equivalent fraction for 3/5 by multiplying numerator and denominator by 4.
Answer: 3/5 = 12/20
04Generate an equivalent fraction for 2/6 by multiplying numerator and denominator by 5.
Answer: 2/6 = 10/30
05Generate an equivalent fraction for 1/7 by multiplying numerator and denominator by 2.
Answer: 1/7 = 2/14
06Generate an equivalent fraction for 7/8 by multiplying numerator and denominator by 3.
Answer: 7/8 = 21/24
07Generate an equivalent fraction for 1/2 by multiplying numerator and denominator by 4.
Answer: 1/2 = 4/8
08Generate an equivalent fraction for 2/3 by multiplying numerator and denominator by 5.
Answer: 2/3 = 10/15
Terminology
Words to know
- numerator
- The number of selected equal parts or unit fractions.
- denominator
- The number of equal parts that make one whole.
- equivalent fractions
- Different fraction names for the same numerical value.
- benchmark
- A familiar reference value such as 0, 1/2, or 1 used for comparison.
Continue learning
Connected concepts
Curriculum references
Standards and instructional references
California Mathematics Framework (2023)
Grade-level instructional guidance, mathematical practices, and coherent progression.Common Core State Standards for Mathematics — Grades 4–5
Grade-level expectations for operations, number and fraction work, measurement, data, and geometry.Principles to Actions: Ensuring Mathematical Success for All
Evidence-based emphasis on reasoning, representations, discourse, and conceptual understanding.