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the associative property of addition states that changing the grouping of the values in question will not change the solution. for example, (a+b)+c=a+(b+c) where the grouping of the addition changes but the solution does not. hope i helped and good luck.
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Why is 16.7 a reasonable sum for 7.5 9.2?
7.5 + 9.2 = 16.7So 16.7 is reasonable.===========================You should not have to perform the addition in order to decide whether an estimatewas reasonable. That defeats the whole purpose of the estimating process.Ignore the decimal parts of your two numbers, and you have (7 + 9). You don't needa calculator to know immediately that THAT sum is 16. So 16 is a good estimate forwhat you'll have when you glue the decimal bits back onto the whole numbers, andwhen you reassemble everything and get a sum of 16.7 , that's so near your estimatethat you can be pretty sure that you added correctly.
Should students only have half-hour recess?
Well...is ur own opinal I can't really anwser this question,,, The question is a good question to debate on ,.... As I was saying u could ask ur self of we only need half-hour for recess..But if ur asking me I thing it's enough I dun thing u take half an hour to eat rite...so yah Kk..So U guys dun real Y needa ask....the best person to ask is urself..Is it enough? IT UR OWN OPINAL DUN FORGET
How many pounds should a 12 year old girl be?
To answer this question correctly, we'd needa lot more information than simply your age. However, I don't believe the Internet is the best place to put said information. (unless you're absolutely comfortable giving it away on the web) To answer your question we'd need the following information: Age, height, your weight as well as the "size of your frame". By that, I'm intending to point out that there is no true ideal weight because different people have different bodies, thickness of the bones, frame, etc.Instead of giving this information here, on this thread, why don't you do it yourself on the following site. Be sure to read everything carefully as you're surely to learn something new. http:/www.halls.md/ideal-weight/body.html Other answer:That's very hard to say. At that age, your body is still growing, but around the age of 18, you're body will be fully grown, and then you can check your BMI which should be between 18.5 and 25.Here's a site where you can calculate ithttp://www.nhlbisupport.com/bmi/HOWEVER the numbers are not representative if you're not an adult, they can only give a little bit of direction at your age. So if your BMI is now 18 or 27, don't panic yet, your body will form how it should be when you're fully grown up. Just keep eating healthy, exercise a bit and don't eat too much fatty food. And certainly don't diet a such an age without medical consultation!
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