Standard Form

Standard Form Standard Form is a way of representing very large and very small numbers. In standard form we re-write number in terms of powers of ten: 420 = 4.2 × 10² One important rule is that the number we are multiplying by ten must itself lie between 1 and 10:

What about numbers that are very small? Let's try 0·092. We need to move the 9 and the 2 two places to the left (so we have a number more than 1 but less than 10). We indicate that the number needs to be divided by 10 twice using a negative power: 9·2 × 10-2 Want to learn More…..Click Here