Class 7 Maths · Part 1 Chapter 4 · CBSE / NCERT
Expressions Using Letter-Numbers
Using letters for numbers. You’ll learn to turn words into expressions, find their values, simplify them by adding like terms and opening brackets, and describe patterns with a formula.
11 short lessons · about 42 minutes in all
What you’ll learn
- 1Letters that stand for numbers4 min
- 2Turning words into expressions4 min
- 3Formulas for perimeter3 min
- 4Finding the value of an expression4 min
- 5Writing 4n for 4 × n3 min
- 6Adding like terms4 min
- 7Multiplying into a bracket4 min
- 8Opening brackets after a minus4 min
- 9Position rules like 3n − 14 min
- 10Proving a pattern with a letter4 min
- 11Counting steps in a matchstick pattern4 min
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Letters that stand for numbers · about 4 minutes
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More Class 7 Maths
The other 14 chapters.
PART 1 · CH 1Large Numbers Around Us12 lessonsPART 1 · CH 2Arithmetic Expressions10 lessonsPART 1 · CH 3A Peek Beyond the Point12 lessonsPART 1 · CH 5Parallel and Intersecting Lines10 lessonsPART 1 · CH 6Number Play10 lessonsPART 1 · CH 7A Tale of Three Intersecting Lines12 lessonsPART 1 · CH 8Working with Fractions10 lessonsPART 2 · CH 1Geometric Twins12 lessonsPART 2 · CH 2Operations with Integers12 lessonsPART 2 · CH 3Finding Common Ground10 lessonsPART 2 · CH 4Another Peek Beyond the Point10 lessonsPART 2 · CH 5Connecting the Dots…12 lessonsPART 2 · CH 6Constructions and Tilings11 lessonsPART 2 · CH 7Finding the Unknown11 lessons
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