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Does a square root have to be a whole number?
No, a square root doesn't have to be a whole number. The square root of 2.25 is 1.5. It could be said that most square roots are not whole numbers. Take just the first few integers (counting numbers). Find the square roots of the numbers 1 through 10 and you'll find three of the numbers have whole number square roots (1, 4 and 9). The other seven don't. For the numbers 11 through 20, there is only 1 number with a whole number square root (16).
How do you write one hundred forty-seven and nine hundred twenty-three millionths in numbers?
To write "one hundred forty-seven and nine hundred twenty-three millionths" in numbers, you would write it as 147.000923. The whole number part is 147, and the decimal part is 0.000923, which represents nine hundred twenty-three millionths.
Is square root are whole numbers?
Very rarely. Square roots are only whole numbers for perfect squares.
Is square root of 7 rational?
No. Square roots of whole numbers that don't result in whole numbers (e.g. the square root of 64 is 8), are considered to be "Irrational Numbers".
Which whole numbers have square roots between 1 and 20?
All whole numbers between 1 and 400 (=20 square).
