Mathematics, 03.01.2020 13:31, hokamidat

Add 364876 and 6233 and then estimate sum

Answers: 2

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You always do the estimating first. That way, you'll know
if your answer makes sense. If not, you know right away that
you made a mistake in adding.

When I look at these numbers, I make the first one about 365 thousand
and the second one about 6 thousand.

I add those in my head, and I estimate that the sum is going to be
about 371 thousand.

Now I pick up my pencil and add the numbers. I get 358,643 .

This is not good. Something went wrong. That's nowhere near my estimate.
I must have made a mistake. I'll have to try again.

This time I put the numbers into my calculator and add them.
I get 371,109 . This is very near my estimate, so I accept it.

I look back at my work on paper, to see if I can spot my mistake there.
Yep ... there it is. On paper, I subtracted the numbers instead of adding.

The estimate ... which I did FIRST ... told me when my answer was
wrong, and when it was right.

answered: Guest

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

$4/2 = 2\\7/3.5=2\\8/4=2\\10/5=2$

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

$y=\frac{x}{2}$

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

answered: Guest

i think the correct option is the second option.

Which function is shown on the graph below

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Add 364876 and 6233 and then estimate sum...