Decimal Multiplication: Finding the Correct Decimal Point in 3.5 × 2.4 = 840

Question

Look at the following exercise and determine the correct place of the decimal point:

3.5×2.4=840 3.5\times2.4=840

Video Solution

Step-by-Step Solution

In the number -3.5, there is one digit after the decimal point: 5.

In the number 2.4, there is one digit after the decimal point: 4.

In other words, we have two digits after the decimal point.

Therefore we will move the decimal point two places to the left to get our answer: 8.40.

Answer

8.40 \text{8}.40