Help your students prepare for their Maths GCSE with this free comparing Standard Form worksheet of 44 questions and answers
Standard form, or standard index form, is a simple way of writing very large numbers or very small numbers. To write a number in standard form, we write the number as a decimal between 1 and 10, multiplied by a power of 10. We call numbers that are not written in standard form ordinary numbers.
When converting numbers to standard form, we write any significant figures as a decimal between 1 and 10. We then need to maintain the place value of the number by multiplying the decimal by a power of 10. For example let’s look at the number 43000. The significant figures here are 4 and 3 so the decimal is 4.3. To maintain the place value of the number, we need to multiply 4.3 by 10000 or 104. Therefore 43000 can be written as 4.3×104. For very small numbers, the power of 10 will be negative.
We can convert standard form numbers back to ordinary numbers by multiplying the decimal by the power of 10. We can multiply and divide numbers written in standard form directly but to add or subtract numbers written in standard form it is best to convert them back to ordinary numbers.
There will be students in your class who require individual attention to help them succeed in their maths GCSEs. In a class of 30, it’s not always easy to provide.
Help your students feel confident with exam-style questions and the strategies they’ll need to answer them correctly with our dedicated GCSE maths revision programme.
Lessons are selected to provide support where each student needs it most, and specially-trained GCSE maths tutors adapt the pitch and pace of each lesson. This ensures a personalised revision programme that raises grades and boosts confidence.