5A- 1st Semester Exam

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What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

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Front

What does PEMDAS stand for?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is the first operation to perform in the expression (13 - 1) + 4?

Back

The first operation is subtraction: 13 - 1 = 12.

Front

What is the value of y in the equation y - 4.6 = 12?

Back

To find y, add 4.6 to both sides: y = 12 + 4.6 = 16.6.

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What is the purpose of using parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.

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What is the difference between addition and multiplication?

Back

Addition combines two or more numbers to get a total, while multiplication is repeated addition of a number.

Front

What is the order of operations in mathematics?

Back

The order of operations is the sequence in which operations should be performed: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.

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