Rational numbers are the number set that includes many numbers in the form of p/q, in which q is not equal to 0. This set of numbers, whether natural numbers, whole numbers, integers, or any.
Numerator & Denominator
In rational numbers, i.e., p/q, p is the numerator.
And in p/q, q is known as the denominator.
Example: ⅔, 2 is the numerator, and 3 is the denominator.
Types of rational numbers
Rational numbers are of many types. Such as:
Equivalent number
When the rational numbers get multiplied with the same number on both sides, i.e., numerator and denominator, it forms another rational number set.
Positive number
The positive set of rational numbers is the one that consists of both numerator and denominator positive.
Example: 5/7, 4/5.
Negative number
The positive set of rational numbers is the one that consists of both numerator and denominator negative.
Example: -2/3, -5/7.
Position of rational numbers on a number line
On the number line, the rational numbers are divided according to types.
The positive numbers will always be presented on the right side of zero.
And negative numbers are always on the left side of zero.
Note: If the denominator is negative, the complete number is negative.
Learning Videos for 7th Grade Math - Rational Numbers
If you add -3/4 and -2/8, where would your answer be on the number line?
A. A
B. B
C. C
D. D
Question 2
David knows that it's common to tip waiters 15% of your total bill in a restaurant. If he wants to spend as close as possible to $35.00 without going over, which menu item should he select?
A. The Salmon - $17.98
B. The Lobster - $31.95
C. The Soup - $29.98
D. The Chef's Special - $32.00
Question 3
A merry-go-round has a diameter of 25 feet. What is the approximate circumference of the merry-go-round?
A. 78.5 ft
B. 157 ft
C. 235.5 ft
D. 314 ft
Question 4
21% of 54 is what number?
A. 2.57
B. 38.89
C. 11.34
D. None of the above
Question 5
As a salesperson you get $50/day and $2.60/each sale you make. If you want to make at least $89 in one day, how many sales would you need to make?