CCSS.MATH.CONTENT.4.NF.A.1✓ Welsh Government / Qualifications Wales AlignedAcademic Year 2026–27
Equivalent Fractions, Decimals & The Number Line
Understand fraction equivalence visually using area models and number lines, and learn to convert tenths and hundredths into decimals.
Why It Matters:Essential for currency transactions, recipe proportions, architectural scaling, and higher-order algebra.
Curated Video Instruction
● Verified Active EmbedSTEP-BY-STEP PROOF
Worked Example
Show why 2/3 is equivalent to 8/12 using multiplication by 1 in the form of n/n:
1
Identify the common multiplier
12 / 3 = 4
Determine what factor transforms denominator 3 into 12.
2
Multiply numerator and denominator by 4/4
(2 * 4) / (3 * 4) = 8 / 12
Multiplying by 4/4 is equivalent to multiplying by 1, preserving total value.
3
Convert to decimal approximation
2/3 ≈ 0.667 and 8/12 ≈ 0.667
Both fractions occupy the exact same coordinate on the real number line.
✓Verification Check
Cross-multiply to confirm equivalence: 2 * 12 vs 3 * 8.
2 * 12 = 24
•
3 * 8 = 24 (24 = 24 Verified)
⚠️ Common Pitfalls & Misconceptions
Adding the same number to numerator and denominator
✗ Thinking 2/3 = (2 + 2)/(3 + 2) = 4/5✓ Equivalent fractions are created by MULTIPLYING or DIVIDING by n/n, never adding
Adding changes the proportion; only multiplication by 1 preserves equivalence.
INTERACTIVE DRILLS
Guided Practice
Practice Question1 of 1
Step-by-step Feedback
Which fraction is equivalent to 3/5 with a denominator of 20?
MASTERY BENCHMARK
Official Assessment Quiz
Formal Assessment
Equivalent Fractions, Decimals & The Number Line
Passing Criteria:70% or higher
Question 1 of 1
What decimal is equivalent to 7/10?
Education to Career Navigation
Where This Lesson Leads
Civil Engineers, Pharmacists, and Chefs use precise fractional and decimal conversions every day.