SaiBook.us Decimals

Lesson Example Discussion Quiz: Class Homework

Example

Title: Decimal Divisions

Grade: 5-a Lesson: S3-L1

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

Examples:

Find the division of decimal 15.6 ÷ 2.

Step 1a

First,multiply the dividend and divisior with 10 then we get 156 ÷ 20.

$1a$

Explanation: In this step, first, convert the decimal number into a whole number, so multiply the dividend and divisor by 10, and then we get 156 ÷ 20.

Step 1b

Divide the first digit of the dividend (1) by the divisor (20). Since 1 is less than 20, we need to consider the next digit as well. Here, 156 ÷ 20 then we get a quotient of 7 with a remainder of 16.

$1b$

Explanation: To divide 156 by 20, we divide the first digit of the dividend- 1, by 20. Since 1 is less than 20, we consider the next digit as well. We get a quotient of 7 and a remainder of 16.

Step 1c

The new dividend value is 16. If the dividend is less than the divisor, place a zero and divide. Divide 160 by 20. The quotient is 8 with no remainder.

$1c$

Explanation: In this step, the new dividend value is 16. If it’s less than the divisor, place a zero, then divide. Divide 160 by 20. The quotient is 8 with no remainder.

Step 1d

Therefore, 156 ÷ 20 = 7.8

$1d$

Explanation: Hence, 156 ÷ 20 = 7.8