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Definition1

Title: Decimals

Grade Lesson s2-p1

Explanation: The best way to understand PSAT-4 is by looking at some definitions. Take turns and read each definition for easy understanding.

Definition

Topics → Definition Example1 Example2

Definition: Decimal Number

A decimal represents non-whole numbers, using a decimal point to separate the whole number from the fractional part.
The dot present between the whole number and fractions part is called the decimal point.

$1$

Explanation:

24.5 is a decimal number. Here 24 is a whole number part, and 5 is the fractional part.

Definition: Fraction

A fraction is a way of representing a part of a whole or a division of quantities. It consists of two parts: the number on the top, known as the numerator, and the number on the bottom, called the denominator.

$2$

Explanation:

In this image, converting 0.075 into fraction form by multiplying by \$1000/1000\$ gives us the result: \$3/40\$.

Definition: Order of Operations

The order of operations in math, commonly known as PEMDAS in the US, dictates the proper sequence for solving equations: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

$3$

Explanation:

\$3/5 - 2/6 + 7/4\$ In the above equation, first, we perform the addition operation (\$3/5 + 7/4 = 47/20\$) and then subtraction(\$47/20 - 2/6 = 121/60\$) and then convert decimal number (\$121\div60 = 2.01\$).