KS2 Primary Maths Age 9-13 - Calculations: Multiplying and Dividing with Decimals - Explained

The video tutorial explains how to multiply 0.9 by 200. It starts by ignoring the decimal point and calculating 9 times 200 to get 1800. Then, it adjusts the result to account for the decimal point, resulting in a final answer of 180. The tutorial emphasizes the importance of placing the decimal correctly in the final answer.

What is the initial step in solving the multiplication of 0.9 by 200?

• Consider the decimal point first

• Multiply 9 by 2

• Ignore the decimal point initially

• Divide 200 by 9

What is the result of multiplying 9 by 200?

• 900

• 2000

• 1800

• 180

Why is it important to adjust the decimal point in the final answer?

• To simplify the calculation

• To make the number larger

• To reflect the original decimal placement

• To ensure the answer is a whole number

How many digits should be after the decimal point in the final answer?

• Three

• Two

• One

• None

What is the final answer after adjusting for the decimal point?

• 18

• 1800

• 180

• 1.8