SaiBook.us Math

Home Course Section Lesson

Lesson Topics Discussion Quiz: Class Homework

Example1

Title: Decimals

Grade Lesson s2-p2

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

Examples

Topics → Definition Example1 Example2

Step: 1

To convert a decimal divisor into a whole number, you need to move the decimal point to the right. In this step, if the divisor is 1.2, convert it to 12 by moving the decimal point one position to the right. Similarly, when dividing a number like 13.24 by 1.2, you would move the decimal point one position to the right in 13.24, resulting in 132.4.

$1a$

Explanation:

First, convert the divisor into a whole number, i.e., 1.2 × 10 = 12. Then, multiply the dividend by the same number of tens using the divisor, i.e., 13.24 × 10 = 132.4.

Step: 2

Now divide the decimal number 132.4 by the whole number 12.

Therefore, 132.4 ÷ 12 = 11.033.

$2a$

Explanation:

Divide normally, ignoring the decimal until the remainder is zero. In this step, 132.4 ÷ 12 becomes 11.033.