help divisions!!!

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could anyone tell my ds how to do divisions rounding up and down!! please!!!

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Do you mean like 23 divided by 5 = 4.6 so you round it up to 5? Or do you mean something different? What year is he?

bump!!!!

sorry cross thread! yr 5.
schnapps. thats what i thought but hubby says no, ds doesn't know what to do,help!!!!

Can you give an example of a question?

Example of sum : 76 divided by 12= (round up)?

In yr 5 I think they use remainders, not decimals, so 76/12 = 6 remainder 4, rounds to 6 (nearer 6 than 7?)

Or :40 div by 15 = (round down)

Milliways, thanks but hubby said, is that not rounding down?

Wouldn't rounding it up take it up to the next number and rounding down take it down to the number?

76 dvided by 12 = 6 remainder 4 so you round up to 7.

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76/12 is 6 remainder 4. This rounds down because it is closer to 6.

There are two ways you could look at it. You could work it out as a decimal (which a calculator would do automatically) and get 6.3333333, which is clearly closer to 6 than it is to 7. Or you could say "what does the remainder 4 mean? It means that I didn't have enough to make up another lot of 12, I only had 4 left over. Imagine a box that takes 12 cakes, but I only have 4 - is the box less than half full (round down) or more than half full (round up)"

However, the teacher seems to be instructing your ds whether to round up or down. Maybe this is because of the context of the question.

Usually we would round up if a number is more than half way towards the next number (i.e. point five or higher as a decimal). But there are some real life circumstances in which we have to round wrongly.

Take for example the 76/12 question. It could be:

You have 76 cakes that need to be packed into boxes of 12. You can only sell full boxes. How many boxes can you completely fill?

You have 76 cakes to take to a party. Twelve cakes fit into a box. How many boxes will you need in order to carry all the cakes?

In the first question you could only get 6 complete boxes. In the second question every cake has to go somewhere, so you need 7 boxes.

Sorry getting ds's to bed.
fisil,thanks i think your right and we will go with that. some of the next set of Q's were the cakes in boxes type, so probably right.

See what teacher says!

Better send in an apple

Thanks everyone.