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Standard form allows students to work with very large and very small numbers efficiently. It appears in science-context questions and is tested on both non-calculator and calculator papers across all exam boards.
Our tutors see these errors again and again. Knowing them in advance gives you a head start.
Writing 32 x 10^5 instead of 3.2 x 10^6 (forgetting that a must be between 1 and 10)
Getting the sign of the power wrong for small numbers
Struggling with subtraction or addition in standard form when powers differ
This topic is tested by the following exam boards. Our tutors are specialists in each one.
Index laws are a core algebra and number skill tested at both foundation and higher tier. Higher-tier students must also handle negative and fractional indices, making this a topic that bridges number work with algebraic manipulation.
NumberEstimation questions test whether students can round numbers sensibly to perform quick mental calculations. Bounds questions (higher tier) require understanding of upper and lower limits arising from measurements rounded to a given degree of accuracy.
NumberDecimal arithmetic is essential for real-world problem solving and calculator-based exam questions. Students need fluency with the four operations on decimals, place value understanding, and converting between decimals and other number forms.
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Take our free diagnostic quiz to find out exactly where you stand, then get matched with a tutor who specialises in number.