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Definition1

Title: Decimals

Grade Lesson s2-p2

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 Multiplication

Multiplying decimals, use the same procedure as for whole numbers, but pay attention to the placement of the decimal point in the product.
Multiplication of decimals is done by ignoring the decimal point and multiplying the numbers. Then, the number of decimal places in the product equals the total number of decimal places in the given numbers.

$1$

Explanation:

In this image, the product of 10.6 and 8.1, we multiplied them and obtained the result of 85.86.

Definition: Decimal Division

Decimal division is similar to dividing whole numbers, but a decimal point is inserted after each decimal place.
Dividing whole numbers, and when dividing decimals, the way the decimal point is handled is different. Decimals can be divided in the following ways:
1. Dividing a decimal by a whole number.
2. Dividing a decimal by another decimal.
3. Dividing a decimal by 10, 100, or 1000.

$2$

Explanation:

Here, 17 is divided by 0.2, then we get 85. Therefore, the quotient is 85.

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\$).