Square root of 9990

The square root of 9990 is 99.949987 (rounded to 6 decimal places). In simplest radical form it is 3√1110.

Square root of 9990

Pick any whole number from 1 to 10,000.

\sqrt{9990} = 3\sqrt{1110} \approx 99.949987

How to work it out

1
The square root of 9990 is the number that multiplied by itself gives 9990.
2
9990 is between the perfect squares 99² = 9801 and 100² = 10000, so its square root is between 99 and 100.
3
Pull out the biggest square factor: 9990 = 9 × 1110, so
$\sqrt{9990} = \sqrt{9 \times 1110} = 3\sqrt{1110}$
4
A calculator, or long division of digits, gives
$\sqrt{9990} \approx 99.949987$

LaTeX source of the formulas on this page

\[ \sqrt{9990} = 3\sqrt{1110} \approx 99.949987 \]
\[ \sqrt{9990} = \sqrt{9 \times 1110} = 3\sqrt{1110} \]
\[ \sqrt{9990} \approx 99.949987 \]

What is the square root of 9990?

The square root of 9990 is 99.949987 (rounded to 6 decimal places). In simplest radical form it is 3√1110.

Is 9990 a perfect square?

No. It lies between 99² = 9801 and 100² = 10000.

What is 9990 squared?

9990 × 9990 = 99800100.

What is the square root of 9990 rounded to 2 decimals?

99.95.