Help your students prepare for their Maths GCSE with this free Adding and Subtracting 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 convert numbers to standard form, we write them as decimals between 1 and 10, multiplied by a power of 10. We call numbers that are not written in standard form ordinary numbers.
If we are adding or subtracting two standard form numbers with different powers of 10, the place value of the numbers written in the decimals will be different so we cannot add or subtract them directly. Therefore, when adding and subtracting numbers in standard form we first convert the numbers back to ordinary numbers. Once we have added or subtracted them, we can convert the answer back into standard form.
Alternatively we can make the both powers of 10 the same by adjusting the number. Once the powers of 10 are the same we can then add or subtract the numbers, taking care to ensure the final answer is in standard form.
Looking forward, students can then progress to additional number worksheets, for example a fractions worksheet or a rounding worksheet.
For more teaching and learning support on Number our GCSE maths lessons provide step by step support for all GCSE maths concepts.
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.