GCSE Secondary Maths Age 13-17 - Number: Standard Form - Explained

The video tutorial explains how to express numbers in standard form, which consists of three parts: a number between 1 and 10, a base of 10, and an exponent indicating the decimal point's movement. The instructor demonstrates converting 0.000068 to standard form by moving the decimal point to create 6.8 and adjusting the exponent to -5. This process involves understanding the multiplication and division by powers of ten. The tutorial emphasizes the importance of recognizing the three components of standard form and applying this knowledge to solve related mathematical problems.

What is the range for the first part of a number in standard form?

• Greater than 0 but less than 1

• Less than 0

• Greater than or equal to 1 but less than 10

• Greater than 10

When converting a decimal to standard form, where should the decimal point be moved?

• Before the first non-zero digit

• Before the last digit

• After the first non-zero digit

• At the end of the number

How many places was the decimal point moved in the example given?

• 4 places

• 5 places

• 6 places

• 3 places

What operation is performed to adjust the size of the number in standard form?

• Addition

• Subtraction

• Division

• Multiplication

What does the power of 10 indicate in standard form?

• The number of digits in the number

• The size of the number

• The number of decimal places moved

• The number of zeros in the number