How to calculate cube roots in your head in seconds? (In Hindi) | Math Enigma India | Mental Math скачать в хорошем качестве

How to calculate cube roots in your head in seconds? (In Hindi) | Math Enigma India | Mental Math

Hello everyone, I'm Saima. Welcome to my channel, Math Enigma. in this video, I'll share a magical trick to find any cube roots in seconds! ​🧠 Master Mental Math: Cube Root in Seconds! ​Finding the cube root of a huge number (like 39,304) sounds impossible without a calculator, but it's actually one of the easiest mental math tricks to learn! ​This trick works perfectly for perfect cubes (numbers that result in a whole number when cubed). ​The Two Golden Rules ​To do this, you only need to memorize two simple things: ​1. The "Last Digit" Pattern Most numbers keep their own digit when cubed. ​If the number ends in 1, the cube ends in 1. ​4 - 4 ​5 - 5 ​6 - 6 ​9 - 9 ​0 - 0 ​The only "flippers" are 2, 8, 3, and 7 (they add up to 10): ​2 flips to 8 (and 8 to 2) ​3 flips to 7 (and 7 to 3) ​2. The 1-10 Cubes You just need to know the cubes of numbers 1-9: 1^3=1 | 2^3=8 | 3^3=27 | 4^3=64 | 5^3=125 | 6^3=216 | 7^3=343 | 8^3=512 | 9^3=729 ​The 3-Step Method ​Let's find the cube root of 39,304. ​Step 1: Look at the Last Digit The number ends in 4. According to our pattern, 4 stays 4. ​So, the last digit of our answer is 4. ​Step 2: Ignore the Last 3 Digits Cross out the last three numbers (304). We are left with just 39. ​Step 3: Find the Closest Cube Look at the remaining number (39). Which cube is closest to 39 without going over? ​3^3 = 27 (Under 39) ​4^3 = 64 (Over 39) ​So, it fits into the 5 range. ​The first digit is 3. ​Final Answer: 34 ​🚀 Practice Challenge! ​Try finding the cube root of 175,616 using this method. ​Last digit is 6 -What does the answer end with? ​Ignore 616 You are left with 175. ​Closest cube under 175? (5^3=125, 6^3=216) ​Comment your answer below! 👇 Hope you enjoy and liked the video. For more latest videos, press the bell icon and subscribe to my channel. Thanks for your support! It means the world to me!    • How to calculate cube roots in your head? ...