CONVERTING BETWEEN VALUES You may be asked, for example, how many Mi are in a Ti. You don’t need to learn all of the different numbers, just remember the patterns and the rule for dividing numbers with powers:
numbers with powers Ti/Mi = 2
^{40}/2^{20} = 2^{40-20}
Worked Example How many MiB are in a TiB?
Step 1: write down the values for each.
Mib=2
^{20} Tib=2^{40}
Step 2: work out the difference in powers. Subtract the smaller power (20) from the larger power (40) to get the new power. 40 – 20 = 20 The answer is 2 to the power of the difference in powers, 20. 2
^{20} = 1 048 576
How many MB are in 2 GB? Step 1: write down the values for each.
MB=10 Step 2: work out the difference in powers. 9 – 6 = 3, so 10^{6} GB=10^{9}
^{3} = 1000 Step 3: you need 2 GB, so multiply by 2. 1000 × 2 = 2000 You can also give answer in the form of 2 x10^{3}
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