Grade 7 Exam > Grade 7 Videos > Mathematics for Grade 7 > Rational Numbers in Standard Form
Rational Numbers in Standard Form Video Lecture | Mathematics for Grade 7
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FAQs on Rational Numbers in Standard Form Video Lecture - Mathematics for Grade 7
| 1. What is a rational number in standard form? |  |
Ans. A rational number in standard form is a number that can be expressed as a fraction, where both the numerator and the denominator are integers and the denominator is not zero.
| 2. How can we represent rational numbers in standard form? | |
Ans. To represent a rational number in standard form, we need to express it as a fraction in which the numerator and the denominator have no common factors other than 1. If there are common factors, we need to divide both the numerator and the denominator by their greatest common factor to simplify the fraction.
| 3. Can an irrational number be written in standard form? | |
Ans. No, an irrational number cannot be written in standard form because it cannot be expressed as a fraction. Irrational numbers are non-repeating and non-terminating decimals, such as the square root of 2 or pi.
| 4. What are some examples of rational numbers in standard form? | |
Ans. Examples of rational numbers in standard form include 1/2, 3/4, -5/6, and 2/1. These numbers can be expressed as fractions with integers as the numerator and denominator.
| 5. How do we compare rational numbers in standard form? | |
Ans. To compare rational numbers in standard form, we can cross-multiply the fractions and compare the products. If the products are equal, the rational numbers are equal. If not, we compare the products to determine which rational number is greater or smaller. Alternatively, we can convert the fractions to equivalent fractions with a common denominator and compare the numerators.
Text Transcript from Video
this now understand about gendered forms
of a rational number
a rational number P by Q is said to be
in standard form when P and Q have no
common factor except one and Q greater
than 1 for example 2 by 3 and - 7 by 9
are in standard forms while 7 by - 9 5
by 1 and 0 by 2 are not in standard
forms standard form of 2 by minus 4 4 by
1 and 0 by 2 r minus 1 by 2 4 and 0
respectively
of a rational number
a rational number P by Q is said to be
in standard form when P and Q have no
common factor except one and Q greater
than 1 for example 2 by 3 and - 7 by 9
are in standard forms while 7 by - 9 5
by 1 and 0 by 2 are not in standard
forms standard form of 2 by minus 4 4 by
1 and 0 by 2 r minus 1 by 2 4 and 0
respectively
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Oct 24, 2024 Last updated |
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