Tricks to Get Cube Root Faster
To find cube root of perfect cube we follow the same method as we done in case of squares. First try to learn cubes from 1 to 10 as given in the below image.
Pattern is written in right most part as if unit place is 3 it's cube have 7 as unit. Hence when 7 comes 3 will be the cube root unit place. Learn it and follow the rules.
Step 1 : Divide the number in pair of 3.
Step 2 : Find the unit place with table you remembered.
Step 3 : Find the rest part number lies between which cubes. Keep the smallest number of that cube to the tenth place. Place both as answer.
- Example - Find Cube root of 19683
19683 - 3 is unit place so we put the 7 as the unit place. Next we have 19 which lies between cubes of 2 and 3 so we take 2 for tenth place. Hence Our ans is 27.
Cube root of 19683 is 27.
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