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Chapter 12 of 14
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Algebra Play

CBSE · Class 8 · Mathematics

Flashcards for Algebra Play — CBSE Class 8 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

59 questions68 flashcards5 concepts

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68 Flashcards
Card 1कोर अलजेब्रा आइडिया

'एक संख्या के बारे में सोचो' जैसे बीजगणित के युक्तियों के पीछे मुख्य विचार क्या है?

Answer

एक अक्षर-संख्या किसी भी प्रारंभिक संख्या के लिए खड़ी हो सकती है, इसलिए चरणों के एक अनुक्रम को एक बार में प्रत्येक मान के लिए परीक्षण किया जा सकता है। यह दिखाने में मदद करता है कि क्या एक चाल हमेशा एक

Card 2Core Algebra Idea

What is the main idea behind algebra tricks like 'Think of a Number'?

Answer

A letter-number can stand for any starting number, so a sequence of steps can be tested for every value at once. This helps show whether a trick always gives the same final answer.

Card 3Think of a Number Trick

Think of a Number trick: Why does the result always become 2?

Answer

Let the starting number be x. Double it: 2x. Add four: 2x + 4. Divide by 2: x + 2. Subtract the original number: x + 2 - x = 2. So the final answer is always 2.

Card 4एक संख्या चाल के बारे में सोचें

एक संख्या की चाल के बारे में सोचेंः परिणाम हमेशा 2 क्यों हो जाता है?

Answer

मान लीजिए कि शुरुआती संख्या x है। इसे दोगुना करें: 2x। चार जोड़ें: 2x + 4। 2 से भाग दें: x + 2। मूल संख्या घटाएँ: x + 2 - x = 2. So the final answer is always 2.

Card 5एक संख्या चाल के बारे में सोचें

2x + 4 को 2 से भाग देने पर जो उत्तर आता है, उसमें x का मान क्या है?

Answer

यह चाल का पूरा बीजगणितीय मार्ग दिखाता है। x से शुरू करके, चरण 2x + 4 तक ले जाते हैं, फिर 2 से भाग देते हैं, और अंत में x घटाते हैं। परिणाम हमेशा 2 होता है।

Card 6Think of a Number Trick

What does the expression 2x + 4 divided by 2, minus x show in the number trick?

Answer

It shows the full algebraic path of the trick. Starting with x, the steps lead to 2x + 4, then divide by 2, and finally subtract x. The result is always 2.

Card 7Think of a Number Trick

How can the Think of a Number trick be changed to make the final answer 3 or 5?

Answer

The steps can be adjusted so the constant part at the end changes. For example, if the algebraic steps finally become x + 3 - x, the answer is 3. If they become x + 5 - x, the answer is 5.

Card 8एक संख्या चाल के बारे में सोचें

अंतिम उत्तर 3 या 5 बनाने के लिए एक संख्या के बारे में सोचो को कैसे बदला जा सकता है?

Answer

चरणों को समायोजित किया जा सकता है ताकि अंत में स्थिर भाग बदल जाए। उदाहरण के लिए, यदि बीजगणितीय चरण अंत में x + 3 - x हो जाते हैं, तो उत्तर 3 है। यदि वे x + 5 - x हो जाते हैं, तो उत्तर 5 है।

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Frequently Asked Questions

What are the important topics in Algebra Play for CBSE Class 8 Mathematics?
Algebra Play covers several key topics that are frequently asked in CBSE Class 8 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Algebra Play — CBSE Class 8 Mathematics?
Understand the core concepts first, then work through the 59 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 Algebra Play?
There are 68 flashcards for Algebra Play covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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