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Example: Find the square root. √ 49 indicates the positive square root of 49. Since 7×7 is 49, √ 49 =7.

Q: What is the place value chart for the number 49?

Tens | Ones |
---|---|

4 | 9 |

Hence, the square root of 49 is a rational number. In this lesson, we will explore the concept of the square root of 49. Select/Type your answer and click the “Check Answer” button to see the result.

True | False | |
---|---|---|

Square root of 49 is 9. | TrueTrue – Square root of 49 is 9. | FalseFalse – Square root of 49 is 9. |

The absolute value of -51 is 51. The absolute value of 51 is 51. The absolute values of 5 and -5 are both 5.

√ 49 = 7 – 7 is an integer → number 49 is a perfect square.

Every positive number has 2 square roots, one positive and another one is negative. Square root of 49 is ±7, because you can obtain 49 by multiplying two 7’s or two (-7)’s.

Answer: The place of value is once.

Q: What is the place value chart for the number 48?

Tens | Ones |
---|---|

4 | 8 |

Q: What is the place value chart for the number 129?

Hundreds | Tens | Ones |
---|---|---|

1 | 2 | 9 |

The number 48 is not a perfect square. When we want to find the square root of a number that isn’t an obvious perfect square, we have a couple of options. Of course, we can always use a calculator and round to an acceptable decimal place.

The square root of 49 in mathematical form is written with the radical sign like this √ 49. We call this the square root of 49 in radical form.

Some other rational square root numbers are: √9, √16, √36, √ 49, √64. log10 x is 2 when x = 100. 2 is an integer, it is rational.

The absolute value (or modulus) | x | of a real number x is the non-negative value of x without regard to its sign. For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5. The absolute value of a number may be thought of as its distance from zero along real number line.

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