Class 8 Maths: Fractions in Disguise | Percentages more than 100% & Figure It Out (Page 12)
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Class 8 Maths: Fractions in Disguise | Percentages more than 100% & Figure It Out (Page 12)
27 просмотров · 13 дней назад
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27 просмотров · 13 дней назад
In this session, we continue with Class 8 Mathematics: Fractions in Disguise (NCERT / NEP Curriculum).
We explore the core concept of Percentages Greater Than 100%, understanding how improper fractions translate into percentages above 100% and decimals greater than 1. Then, we solve the "Figure It Out" section from Page 12 (Questions 1 to 3) using mental estimation, bar model visualizations, and Vedic arithmetic tricks!
⏱️ Timestamps
[00:00] Introduction: Fractions and Percentages
[01:16] Can Percentages be Greater Than 100%? (Cost & Profit Example)
[03:55] Improper Fractions vs. Proper Fractions in Percentage
[05:40] Fraction-Decimal-Percentage (FDP) Relationships
[08:32] Table Completion: Converting Percentages to Fractions & Decimals
[12:27] Figure It Out (Page 12) – Introduction & Mental Math Strategy
[13:45] Q1: Mental Estimation & Visual Percentage Models
[17:31] Q2 (Part 1): 25% of 160 & Bar Model
[18:55] Q2 (Part 2): 16% of 250 (Mental Splitting Method)
[21:21] Q2 (Part 3): 62% of 360 using Vedic Multiplication
[23:57] Q2 (Part 4): 140% of 40 (Percentage more than 100%)
[25:31] Q2 (Part 5): 1% of 1 Hour (Try It Yourself!)
[26:25] Q2 (Part 6): 7% of 10 kg
[27:47] Q3: Word Problem (Orange & Red Paint Ratio with Bar Model)
[31:12] Summary & Practice Tips
🎯 Key Takeaways:
Proper Fractions \rightarrow Decimals between 0 and 1 \rightarrow Percentages less than 100%.
Improper Fractions \rightarrow Decimals greater than 1 \rightarrow Percentages greater than 100%.
Learn how to draw and interpret Bar Models to estimate and solve percentage problems visually.
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