📘 Class 7 – Maths
Q. What are integers?
Ans: Integers include positive numbers, negative numbers and zero.
Q. What is additive identity?
Ans: Zero is the additive identity.
Q. What is subtraction of integers?
Ans: Subtraction means adding the additive inverse.
Q. What is a negative integer?
Ans: A number less than zero.
Q. Give example of integer.
Ans: -3 is an integer.
Q. What is a fraction?
Ans: A fraction represents part of a whole.
Q. What is a proper fraction?
Ans: Numerator is smaller than denominator.
Q. What is an improper fraction?
Ans: Numerator is greater than denominator.
Q. What is a mixed fraction?
Ans: Combination of whole number and fraction.
Q. What is decimal?
Ans: A fraction with denominator 10,100,1000 etc.
Q. What is an integer?
Ans: Whole numbers including negatives.
Q. Simple interest formula?
Ans: (P×R×T)/100
Q. What is percentage?
Ans: Number out of 100
Q. Perimeter of rectangle?
Ans: 2(l+b)
Q. Area of square?
Ans: side × side
Q. Mean of numbers?
Ans: Sum ÷ count
Q. What is algebra?
Ans: Math using letters
Q. Roman numeral of 50?
Ans: L