Question

MATH HELP?????

Answer 1

dont worry about the wecam tab thing just write the answers

Answer 2

That wouldn't help you very much. What do you not understand?

Answer 3

Estamteing?

Answer 4

Estimating means making a "qualified guess". It doesn't have to be precise, but it need to be in the right direction, "near" the right answer.

If I throw a stone at 1.05 yards, and I throw it three times farther, you can estimate that I threw it at 3 yards (see, it's not really precise).

Answer 5

In your first assignment you have to round to nearest half dollar, that means to round to 0,50 dollars or whole dollars.

Let's take the first one:
$4.85 + $ 1.47 =
First we round to nearest half dollar: $ 5 + $ 1.50
Then we calculate the answer: $5 + $1.50 = $6.50

Answer 6

Oh so $6.79 and 3.95 would be $7.00+$4.00?

Answer 7

exactly!

You look at the decimals to round up or down. If the decimals are between 0.25 and 0.75 you rount to half dollar: 0.5, else you'll round to whole dollars.

Answer 8

round* sorry :P

Answer 9

what happend if its -?

Answer 10

Same thing.

Let's take 1.4: $ 25.43 - $21.20.
Rounding gives: $25.50 - $21 = $4.50

Answer 11

Hit the 'good answer' button if you are helped by my answer!

Answer 12

Stay here incase i need help

Answer 13

Lol, I will :)

Answer 14

Do you understand front-end estimation? Or any of the other assignments?

Answer 15

would number 2 be $3.00

Answer 16

yes!

Answer 17

#3. $20.00

Answer 18

No, almost.

#3 is 14.19 + 5.59 =
Rounded: 14 + 5.50 (remember, between 0.25 and 0.75 gives 0.50)
So the answer is $ 19.50

Answer 19

what about front end estimation?

Answer 20

front end estimation means you look only at the "front" of a number, and round to the first digit.

#5. 4.76 + 6.15 becomes 5 + 6, because 4.7 rounded is 5 and 6.1 rounded is 6. So it doesn't matter what the other decimals are, only look at the first one

Answer 21

11.00?

Answer 22

what about #6?

Answer 23

?

Answer 24

ehm

Answer 25

wat about #6?

Answer 26

Estimate the sum by rounding to whole numbers

8.9 + 9.01 + 9.3 + 8.7 + 9.1
Round to: 9 + 9 + 9 + 9 + 9 = 5*9 = 45

Answer 27

the problem is 1.406 + 3.512

Answer 28

?

Answer 29

1.409 + 3.512

Front end estimation, so round 1.4 to .... and round 3.5 to ...., then add them together

Answer 30

4.90?

Answer 31

or 4.9

Answer 32

No, 1.4 rounds to 1 and 3.5 rounds to 4, so the answer is 5.

Note that you don't have to round to half dollars anymore (that only applies to questions 1-4), so now you do regular rounding, which means if the next digit is 5 or higher, you raise the first digit by 1, if it's lower than 5, the first digit stays the same.

Answer 33

ohh thanks :) lol

Answer 34

so 2.479+6.518 is 2.4 and 6.5 witch 6.5 rounds off to 6 and 2.4 rounds off to 1? so the answer is 3

Answer 35

?

Answer 36

Almost, you go the concept right.

2.4 rounds to 2 (4 is lower than 5, so the 2 stays the same). and 6.5 rounds off to 7 (5 equal to 5 or higher, so the 6 gets raised by 1).

2.4 + 6.5, rounds to 2 + 7 = 9

Answer 37

okay :) so number 8 3.17+2.72 is 3.1 witch rounds off to 3 and 2.7 rounds off to 3 so 3+1 =4?

Answer 38

?

Answer 39

Yes you are right, but you are making a mistake in your addition.

you say 3.1 rounds to 3 and 2.7 rounds to 3, so then you have 3+3 and not 3+1

Answer 40

oh yea right thanks

Answer 41

is it 6.0 or just 6??

Answer 42

and number 9 11?

Answer 43

just 6.

#9 = 10 + 2 = 12

#11 = 8.9 + 9.01 + 9.3 + 8.7 + 9.1
= 9 + 9 + 9 + 9 + 9
= 45

Answer 44

sorry wait number 9 is 9.87+2.16 so its 9.8 that rounds off to 10 and 2.1 rounds off to 1 so its 10+1=11?

Answer 45

??

Answer 46

2.1 rounds to 2 (because the decimal 1 is lower than 5, the 2 stays the same).

number 9 is: 10 + 2 = 12

Answer 47

5.89+7.21 5.8 rounds off to 6 and 7.2 rounds off to 6 so its 6+6=12?

Answer 48

No you are misunderstanding one thing.

Rounding is like this. If you need to round a digit, you look at the next digit.
Then there are two cases:
1) if the next digit is 5 or higher (so 5 till 9), then you raise the first digit by 1.
2) if the next digit is lower than 5 (so 0 till 4), then you keep your first digit (you don't add or substract anything)

1.3 rounds to 1 (the 1 stays)
1.6 rounds to 2 (raise 1 by 1)

2.4 rounds to 2 (the 2 stays)
2.7 rounds to 3 (raise 2 by 1)

Do you understand this ?

Answer 49

no?

Answer 50

15.1 rounds to?

Answer 51

14?

Answer 52

why do you think it's 14?

Answer 53

because 15.1 rounds of to 14?

Answer 54

15.1 rounds to 15, the 15 stays, because the decimal is between 0 an 4.

16.2 rounds to 16, the 16 stays, because the decimal is between 0 and 4.

4.3 rounds to 4, the 4 stays....

3.4 rounds to 3, the 3 stays...

Do you understand now?

Answer 55

yes so the answer is 32

Answer 56

what answer is 32?

Answer 57

I dont understand it im been stuck on this for a while now

Answer 58

????

Answer 59

Hey are you still there?

You are making one mistake, when you round up, you do it good (adding 1, like 6.5 becomes 7). But when you rond down, you substract your number by one (you do: 6.4 becomes 5) and that is not correct, when rounding down, you don't have to substract by 1, you just remove the decimals, like 6.3 becomes 6, and 5.2 becomes 5.

Answer 60

yea i got it all done :)

Answer 61

good job!