Question

Which situation describes a time when it would be all right to round the numbers?

A.
Jesse wants some chain to make gates. He needs a piece that is 34.25 ft long and another piece 28.3 ft long. He thinks of rounding each length to the nearest foot He would buy 62 ft of chain

B.
Sherri is paying for a gift for her mom that costs $17.75 She gives the store clerk $20 The clerk thinks of rounding the price to the nearest dollarShe would give Sherri $2 in change

C.
Shana's pattern calls for a piece of roping that is 24.8 inches long and another that is 16.5 inches longShe thinks

Answer 1

what one do you think???

Answer 2

The chef needs 3.25 lb of flour for one recipe and 2.4 lb for another recipe. He thinks of rounding each amount to the nearest pound. He would buy 5 lb of flour.

Answer 3

ok let me read them i had to post first hang on k?

Answer 4

Can you finish the sentence in C?

Answer 5

oops so sorry sure

Answer 6

Shana's pattern calls for a piece of roping that is 24.8 inches long and another that is 16.5 inches long. She thinks of rounding each length to the nearest inch. She would buy 42 inches of roping.

Answer 7

thats C

Answer 8

Thanks.

If you need a certain minimum amount of something, you can never round it down because you will simply not have enough material. Also, if you are dealing with the price of an item, you don't want to round it up because you don't want to pay extra.

Answer 9

this is C or D with tho

Answer 10

A. If Jesse buys only 62 ft of chain, he can get a piece to be 34.25 ft long or a piece to be 28.3 ft long, but there is not enough chain to get both lengths, since he needs 62.55 ft altogether.

Answer 11

its A?

Answer 12

B. Sherri is being ripped off. She just lost a quarter. Mean store clerk.

Answer 13

No. My explanation above shows it can't be A. By rounding off, Jesse can't do the project. The answer cannot be A.

Answer 14

i think its D

Answer 15

Let's look at C.
Shana needs 24.8 inches and 16.5 inches.
How much does she really need altogether?

Answer 16

41.3

Answer 17

Right.
Now she rounds both numbers UP to 25 and 17.
She adds 25 inches to 17 inches and gets 42, so she buys 42 inches.
Since she only needs 41.3 inches, she's got enough material for her project.

Answer 18

its C!!

Answer 19

She needs a minimum amount of rope. By rounding both numbers up, she gets a little more than she needs, but this way she makes sure she has enough.

Answer 20

With D., the chef will not have enough flour. Since he is rounding both numbers down, he will only have 5 lb of flour when he needs 5.65 lb. I'm sure you don't want his cakes to be bad. Here you have the same problem that if you need a certain minimum amount, you can't round down. You need to get the exact amount or round up.

Answer 21

Yes, the answer is C.

Answer 22

:D yay here is a medal for you

Answer 23

thanks