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Formula Sheet

Unitary Method — Formula Sheet

ICSE · Class 7 · Mathematics

10 formulas from Unitary Method (ICSE Class 7 Mathematics) on one page, grouped by topic. Part of the ICSE Class 7 Mathematics syllabus.

42 questions20 flashcards10 formulas & key relations5 concepts

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10 Entries · 4 Sections

Formulas and Key Relations

Core idea

one day's work = 1 / No. of days required to complete the work

Time required to do a certain work = Work to be done / Work done in unit time

Direct variation

value of required quantity = value of unit quantity × number of units

Arrow method cross ratio: (value on the head)/(value on the tail) for one arrow = (value on the head)/(value on the tail) for the other arrow

Worked examples to remember

₹ x / ₹ 400 = 28 / 10 => x = 1,120

x / 45 = 0.6 / 0.75 => x = 36

4 × 5 = 20; 20 / 4 = 5

60 × 4 = 240; 240 / 3 = 80

2000 ÷ (8 / 15) = 3750; 3750 × (3 / 5) = 2250

Key relations

one day's work = (1) / (No. of days required to complete the work)

Full sheet with units and worked examples

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Frequently Asked Questions

What are the important topics in Unitary Method for ICSE Class 7 Mathematics?
Key topics in Unitary Method include Core Idea of the Unitary Method, Direct Variation, Inverse Variation, Worked Examples from Direct Variation. Study these first, then practise questions on each for Class 7 exams.
How many formulas are in Unitary Method?
This sheet lists 10 formulas from Unitary Method, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Unitary Method for Class 7 exams?
Learn the core ideas first, then work through the 42 practice questions on Unitary Method. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Unitary Method

All ICSE Class 7 Mathematics Formula Sheet

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