Before reading this guide, it may be helpful to read the guides on indices from Module 6 and Module 7. To convert a number into standard form, split the number into two parts - a number multiplied ...

10^{9 + -3} = 10^6\) \((4 \times 10^9) \times (7 \times 10^{-3}) = 28 \times 10^6\) 28 is not between 1 and 10, so \(28 \times 10^6\) is not in standard form. To convert this to standard form ...