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There are several methods. An easy one is trial-and-error: keep finding the square of several numbers; if the result is too high, choose a lower number, if it is too low, choose a higher number.
Repeated division works much faster. Let's assume you want the square root of 2. Your initial estimate for the square root is 1. You divide 2 / 1 = 2. Take the average of the last two numbers, 1.5. This is the next estimate. Repeat: Divide 2 / 1.5 = 1.33... The average of the last two numbers is about 1.4. Repeat, using this as your next estimate. The number of significant figures doubles with each repetition.
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How do you find square root of a number without using calculator?
try to find what number times the same numbers equals the number that you have.
What is 2345x2?
4690 without using a calculator !
What is 45x12?
540... without using a calculator !
What is 32x15?
480... WITHOUT using a calculator !
How do you find the square root of a number without using a calculator?
It's really hard to explain in an answer here. See the link for different ways to do it.
What are the advantage of using a calculator?
A calculator makes it easy to accurately compute sums. Also, a calculator works fast, which is help when you have to calculate under time pressure.
What are advantages of using a calculator?
A calculator makes it easy to accurately compute sums. Also, a calculator works fast, which is help when you have to calculate under time pressure.
Why do you say approximate rather than compute when finding square roots when using a calculator or spreadsheet?
Well, it's both: you're using a machine to compute an approximation. Why isn't it exact? Most square roots (such as the square root of two) are irrational numbers, so their decimal representation requires an infinite number of digits. We humans have to have finite answers, hence we round off.
How many square feet is 32 feet x 12 feet roof?
384 square feet - without using a calculator !
What is the square root of 125 without using a calculator?
square root of 125= 25 times 5 under the radical (25 has a square root so you can take that out of the radical)= 5 times the square root of 5 (Thats your final answer with no calculator)
What is the area of a room that is 3 meters wide and 4.5 meters long?
13.5 square metres - without using a calculator !
How many square feet are in 160 feet long and 30 feet wide?
4800 ft2 - without using a calculator !
Merits and demerits of calculator?
Using a calculator can be beneficial because it helps compute math problems very quickly. The downside is that the batteries or power may go out when you need to use it.
How do you find square root of a number without using calculator?
try to find what number times the same numbers equals the number that you have.
What is 2345x2?
4690 without using a calculator !
What is 45x12?
540... without using a calculator !
What is 32x15?
480... WITHOUT using a calculator !
