गणित

Dekho — tumhare school mein Sports Day hua. Tumhari team ne cricket mein 250 runs banaye aur basketball mein 185 points score kiye. Socho zara — kaun se game mein tumhari team ne zyada score kiya, aur tumhe kaise pata chala?

❌ Bahut baar bachche sochte hain ki kisi number mein jo digit dikhta hai, bas wahi uski 'value' hoti hai. Jaise, 742 mein 7 ki value sirf 7 hai.

✅ Lekin asal mein, 742 mein 7 ki 'value' 700 hai! Kyunki wo 'hundreds place' par hai. 7 to uski 'face value' hai, 'place value' to uski jagah ke hisaab se badalti hai.

Ek kaam karo — ghar par purane akhbaar ya magazine se kuch alag-alag digits (0 se 9 tak) kaat lo. Ab unmein se koi bhi teen ya chaar digits chuno. Un digits ko use karke sabse bada number banao aur sabse chhota number banao. Tumne kya dekha ki numbers bade ya chhote kaise bante hain?

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Dekho — jab tum apne school ki cricket team ka score board dekhti ho, toh game shuru hone se pehle kitne runs hote hain? Zero, hai na? Phir ek run bana, do run bane, teen run bane — yehi toh saare Whole Numbers (पूर्ण संख्याएँ) हैं! Ye zero se shuru hote hain aur aise hi aage badhte jaate hain, kabhi khatam nahi hote. Socho zara — agar zero na hota, toh kya tum cricket ka score theek se calculate kar paati ya apne bank account mein balance dekh paati?

❌ Bahut se bachche sochte hain ki sabse chhota Whole Number 1 hai, jaise Natural Numbers (प्राकृतिक संख्याएँ) mein hota hai.

✅ Nahi didi, sabse chhota Whole Number 0 (zero) hai. Natural Numbers 1 se shuru hote hain, par Whole Numbers mein 0 bhi shaamil hota hai. Yaad rakhna — 0 ko bhoolna nahi!

Ek kaam karo — apne ghar mein 10 rajma ke daane ya chote kankar ikatthe karo. Ab unhe 0 se shuru karke ek line mein rakho — pehle kuchh nahi (0), phir ek, phir do, aise hi. Har daane ke baad wala number uska successor (अनुवर्ती) hai aur pehle wala uska predecessor (पूर्ववर्ती) hai.

ऐप में interactive experiment देखो →