GCSE Secondary Maths Age 13-17 - Number: Decimals - Explained

The video tutorial covers Question 2, which is worth two marks and requires no method explanation. The focus is on correctly placing the decimal point in the answer, using the multiplication fact 5.4 times 36 equals 194.4. The tutorial explains that the answer should have the digits 1944, and the decimal point placement is determined by the number of decimal places in the factors. Part two involves multiplying by 100, requiring a shift of the decimal point. The tutorial emphasizes the importance of understanding decimal placement for correct answers.

What is the main challenge in solving the multiplication of 5.4 and 36?

• Memorizing the multiplication table

• Understanding the question

• Placing the decimal point correctly

• Finding the correct method

If 5.4 times 36 equals 194.4, where should the decimal point be placed in the answer?

• After the first digit

• After the second digit

• After the fourth digit

• After the third digit

In the second part, what operation is performed on both 5.4 and 36?

• They are squared

• They are multiplied by 10

• They are added together

• They are divided by 10

How many places should the decimal point be moved when multiplying by 100?

• Four places

• Three places

• Two places

• One place

What is the final step to ensure the answer is correct in the second part?

• Check the multiplication table

• Recalculate the initial numbers

• Add the numbers again

• Verify the decimal point placement