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Standard form trainer

A number in standard form is A × 10ⁿ, where 1 ≤ A < 10 and n is an integer. Type answers like 3.4 × 10^5 or 3.4x10^5.

Practice

Ten questions, both ways round. Big and small numbers.

How it works

Large numbers: count how many places the decimal point moves left. 45 000 = 4.5 × 10⁴.
Small numbers: the power is negative. 0.0072 = 7.2 × 10⁻³.
Check A is at least 1 and less than 10.