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Chapter 14 of 15
Flashcards

Finding the Unknown

CBSE · Class 7 · Mathematics

Flashcards for Finding the Unknown — CBSE Class 7 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

73 questions66 flashcards5 concepts

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66 Flashcards
Card 1Equations

What is an equation?

Answer

An equation is a statement of equality between two algebraic expressions. It uses the equal sign to show that both sides have the same value. Example: 3x + 4 = 7.

Card 2समीकरण

समीकरण क्या है?

Answer

समीकरण दो बीजगणितीय व्यंजकों के बीच समानता का कथन है। यह बराबर चिह्न का उपयोग करके दिखाता है कि दोनों पक्षों का मान समान है। उदाहरण: 3x + 4 = 7.

Card 3समीकरणों को हल करना

किसी समीकरण को हल करने का क्या मतलब है?

Answer

किसी समीकरण को हल करने का अर्थ है अक्षर-संख्या का वह मान ज्ञात करना जो बाएँ पक्ष और दाएँ पक्ष को बराबर कर दे। उत्तर वह मान है जो समानता को संतुष्ट करता है।

Card 4Solving equations

What does solving an equation mean?

Answer

Solving an equation means finding the value of the letter-number that makes the left-hand side and the right-hand side equal. The answer is the value that satisfies the equality.

Card 5Rules for equations

Why does adding or subtracting the same number on both sides keep an equation balanced?

Answer

Because both sides of an equation always have the same value. If the same number is added or subtracted on both sides, the equality is not changed. This is like removing equal weights from both sides

Card 6समीकरणों के नियम

दोनों तरफ एक ही संख्या जोड़ने या घटाने से समीकरण संतुलित क्यों रहता है?

Answer

क्योंकि एक समीकरण के दोनों तरफ का मान हमेशा समान होता है। यदि दोनों तरफ एक ही संख्या को जोड़ा या घटाया जाए तो समानता नहीं बदलती। यह एक संतुलित तराजू के दोनों तरफ से समान भार हटाने जैसा है।

Card 7समीकरणों के नियम

दोनों तरफ एक ही संख्या को गुणा या भाग करने से समीकरण संतुलित क्यों रहता है?

Answer

क्योंकि दोनों तरफ एक ही संक्रिया करने पर दोनों पक्ष बराबर रह जाते हैं। यदि एक पक्ष से कोई गुणनखंड हटा दिया जाय तो दूसरे पक्ष को उस गुणनखंड से भाग देना होगा। यदि कोई भाजक हटा दिया जाय तो दूसरे पक्ष को

Card 8Rules for equations

Why does multiplying or dividing the same number on both sides keep an equation balanced?

Answer

Because the two sides stay equal when the same operation is done to both sides. If a factor is removed from one side, the other side must be divided by that factor. If a divisor is removed, the other

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Frequently Asked Questions

What are the important topics in Finding the Unknown for CBSE Class 7 Mathematics?
Finding the Unknown covers several key topics that are frequently asked in CBSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Finding the Unknown — CBSE Class 7 Mathematics?
Understand the core concepts first, then work through the 73 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Finding the Unknown?
There are 66 flashcards for Finding the Unknown covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

Sources & Official References

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

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