We halve x and double y.

If it's 1, you have to halve it once.

Then we halve x, rounding down and double y.

So that in one generation, we're going to halve our cultural diversity.

We add y into z. Then we halve x, rounding down and double y.

Don't they say sharing worries could halve them and sharing your happiness will double it?

like 1 2, 1 3 and 1 5, and would add and halve these fractions.

What does it tell us to do? It tells us to double y and halve x.

We actually had to halve its speed, because everyone was too scared when we first did it.

The number 3 you have to halve it once to get down to 1 and then once more.

If the number if 0, then you don't have to halve it at all to get down to 0.

If it's 2, you have to halve it twice once to get you down to 1 and then once more to get to 0.

Well, if you have a number like this a binary number like that, each time you halve it, you're chopping off one of the bits.

One of the things that's very frustrating about this is that we know, by getting modern neonatal incubators into any context, if we can keep premature babies warm, basically it's very simple we can halve infant mortality rates in those environments.

Now, I'm sure you all keep a copy of the goals under your pillow, or by the bedside table, but just in case you don't, and your memory needs some jogging, the deal agreed then goes like this developing countries promised to at least halve extreme poverty, hunger and deaths from disease, alongside some other targets, by 2015, and developed nations promised to help them get that done by dropping debts, increasing smart aid, and trade reform.