SaiBook.us Decimals

Lesson Example Discussion Quiz: Class Homework

Lesson

Title: Multiplication of Unlike Decimals

Grade: 5-a Lesson: S2-L7

Explanation: Hello students, let us learn a new topic in decimals today with definitions, concepts, examples, and worksheets included.

Lesson:

Definition: Decimals number

Decimals are a type of number that consists of a whole number and a fractional part separated by a decimal point. The dot between the whole number and the fractional part is a decimal point.
The multiplication of decimals is similar to the multiplication of whole numbers. When multiplying decimals, treat them as whole numbers, and then adjust the decimal point in the product based on the total number of decimal places in the factors.

$1$

Explanation: In this image, multiply 121.121 by 111.1, first multiply them as whole numbers: 121121 × 1111 = 13456.5431. Then, count the decimal places: 121.121 has 3, and 111.1 has 1, totaling 4 decimal places. Place the decimal point in the product: 13456.5431.