Class 7 Maths · Ganita Prakash Part 1 · Chapter 4
Expressions using Letter-Numbers
Your child’s first real step into algebra — using letters to stand for numbers, and writing rules as expressions.
Video coming soon — meanwhile, watch free classes on our YouTube channel →
Rashmi Ma’am teaches the full chapter free on YouTube — watch first, then practise below.
What your child learns
- Use a letter to stand for an unknown or changing number
- Build expressions from patterns and real situations (matchstick patterns, ages, costs)
- Evaluate an expression for a given value of the letter
- Simplify simple expressions and combine like terms
- See how letter-numbers turn a specific problem into a general rule
Parent pointer
This is the most important chapter of Class 7 — it’s the doorway to all of Class 8–10 algebra. A child who “gets” letter-numbers now finds equations natural next year; a child who memorises without understanding starts the famous “Maths is hard” spiral. Worth extra time.
Stuck on this chapter? Message us — tell us the exercise number and we’ll point you to the right video.
💬 Ask about this chapterPractise it — the Azone loop
Watch the class
Full chapter above, free. Pause and solve along — that’s the rule.
Quick questions parents ask
Why is my child suddenly struggling when they were fine with numbers?
Because this is a real jump in abstraction — a letter that could be any number is a new idea, not a harder version of an old one. The video builds it from patterns your child can see and count, which is exactly how the new book intends it.
Is this the same as the old “Algebraic Expressions” chapter?
It covers the same ground as the old Class 7 introduction to algebra, but teaches it through patterns and rules instead of definitions first. The skills transfer exactly to Class 8.
Want this chapter to actually stick?
Join the small live online batch (max 20 students) — weekly tests, doubt solving and a parent report card. Or start with a free demo class.