This activity is an introduction to multiplication of simple decimals.

Example

Complete the following multiplications.

We know that 31 x 8 = 248

What is: 

3.1 x 8 = ?

31 x 0.8 = ?

Answer

When a number in the question is divided by 10, we must also divide the answer by 10.

                                     

 

Answers are both 24.8