Question

In which of the following situations could an estimate be appropriate?





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
how long it takes an artist to paint a picture
B.
how much rain a meteorologist (weather scientist) measures during a storm
C.
how many points a teacher makes a test worth
D.
how much money a store manager calculates his store made in a week

Answer 1

which one is very difficult to get exactly?

Answer 2

wat do u mean

Answer 3

for each question, ask yourself "is it diificult to obtain the exact number?"

Answer 4

i think its b does it ryt

Answer 5

it's B. yes

Answer 6

r u sure

Answer 7

Estimate using front-end estimation.

496 - 373





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
0
B.
100
C.
120
D.
200

Answer 8

yes. A-> use a timer. C->it's noted on 20, or on 100. anyway the number is known. D->count everything and the amount is correct.

Answer 9

wat

Answer 10

200 is the answer

Answer 11

each sentence talks about some quantity.
I just explained that the quantities in A,C and D can usually be determined, the exact value.
The value mentioned in B (how much rain...) cannot be determined exactly.

Answer 12

ok

Answer 13

oh i did not talk about the last problem.

Answer 14

so the answer is d

Answer 15

In the "496 - 373" problem? no.

Answer 16

front end estimation: 496 must be rounded to 400 or 500. it closer to 500.
373 must be rounded to 300 or 400. it is closer to 400.
so the estimation will be 500-400 = 100.

Answer 17

hmm thks

Answer 18

Round each number to the nearest hundred and solve.

8,620 + 1,235





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
9,000
B.
9,700
C.
9,800
D.
9,900

Answer 19

dude i dnt know how to do estimating

Answer 20

when you have to make an estimation "to the nearest" something, you take the number, scrap some numbers , replacing them by zeros, and compare two options.

Answer 21

8,620 to the nearest hundred.
"to the nearest hundred" means the number is of the form a,b00. (it is a multiple of 100)

Answer 22

so it become 9000

Answer 23

The two candidates are 8,600 (just change "20" to "00") or 8,700 (the upper candidate)

Answer 24

so 8700

Answer 25

then look which one of 8,600 or 8,700 is closest from 8,620. It is 8,600 (the difference is only 20, while the difference between 8,700 and 8,620 is 80).

Answer 26

8600+1200 ryt

Answer 27

Yes!

Answer 28

test: what is 8,620 to the nearest thousand?

Answer 29

2

Answer 30

Which of the following expressions uses the best compatible numbers to estimate the problem below?

5,543 ÷ 904





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
5,500 ÷ 900
B.
5,000 ÷ 900
C.
5,600 ÷ 900
D.
5,600 ÷ 800

Answer 31

hmm.
to the nearest thousand -> three ending zeros.
->8,620 is rounded to 8,000 or (next multiple of 1,000) 9,000

Answer 32

Which of the following expressions uses the best compatible numbers to estimate the problem below?

5,543 ÷ 904





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
5,500 ÷ 900
B.
5,000 ÷ 900
C.
5,600 ÷ 900
D.
5,600 ÷ 800

Answer 33

if the estimates are close to the real numbers, the estimation is good right?

then, is A better than B ?

Answer 34

Which of the following expressions uses the best compatible numbers to estimate the problem below?

376 ÷ 64





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
380 ÷ 60
B.
370 ÷ 65
C.
370 ÷ 60
D.
360 ÷ 60

Answer 35

I will not just answer all the questions. I asked some easier questions in order to make understand. it is better if you try answering these.

Answer 36

i m ok
i ll try n giving u answer n tell me if its ir wrong

Answer 37

i think its a

Answer 38

in this problem right?
——
Which of the following expressions uses the best compatible numbers to estimate the problem below?

5,543 ÷ 904





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
5,500 ÷ 900
B.
5,000 ÷ 900
C.
5,600 ÷ 900
D.
5,600 ÷ 800
——————
yes A is better.

Answer 39

For:
——
Which of the following expressions uses the best compatible numbers to estimate the problem below?

376 ÷ 64





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
380 ÷ 60
B.
370 ÷ 65
C.
370 ÷ 60
D.
360 ÷ 60
——————
what is your guess here?

Answer 40

a

Answer 41

380/60

Answer 42

In which of the following situations is an exact number the most important?





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
about how many spectators attended the gymnastics competition
B.
how long it takes to drive across Texas
C.
what time your flight leaves from an airport
D.
how many words there are in the dictionary

Answer 43

the numbers are rounded to the nearest 'ten'.
forgetting about the division, how would you round 374 to the nearest ten?

Answer 44

374 -> 370 or 380. It is 370 who is closer.

rounding 64 -> 60 or 70? 60 is closer.

370/60 seems to be a better estimate.

Answer 45

yes 370

Answer 46

hmm

Answer 47

the question is "important?"
for each option, ask "if i don't know exactly, does it have bad/annoying consequences?"

Answer 48

In which of the following situations is an exact number the most important?





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
about how many spectators attended the gymnastics competition
B.
how long it takes to drive across Texas
C.
what time your flight leaves from an airport
D.
how many words there are in the dictionary

Answer 49

no

Answer 50

i need 13 more plzz can u help me

Answer 51

?

Answer 52

i think its c

Answer 53

you're right.

Answer 54

Round each number to the nearest ten thousand and solve.

647,097 - 301,865





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
300,000
B.
346,000
C.
350,000
D.
340,000

Answer 55

how many ending zeros when rounding to the nearest ten thousand?

Answer 56

i thnk its b

Answer 57

4 ending zeros:
647,097 - 301,865
estimated by -> 650,000 - 30,000 = ...

Answer 58

620000

Answer 59

sorry i wrote it wrong. 650,000-300,000 = 350,000.

Answer 60

yes

Answer 61

Round each number to the nearest hundred and solve.

1,234 + 5,678




Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
6,000
B.
7,000
C.
6,900
D.
6,910

Answer 62

1200+5700

Answer 63

its b its ryt ya wrong

Answer 64

where am i wrong?

Answer 65

u r wrong yes it will become 6700

Answer 66

i think its a ya b

Answer 67

how do you round 1,234 to the nearest hundred?

Answer 68

i thnk its d

Answer 69

if u total both u ll get 6912 so d is near it

Answer 70

You have to round the number before adding them.

Answer 71

ok

Answer 72

1000+6000

Answer 73

to the nearest hundred: 1200 + 5700.

Answer 74

hundresd place is 2 ryt

Answer 75

when they ask you to round for example thousand.
look: thousand = 1,000 <- there are 3 zeros.

Follow these steps:
123,456 -> 123,000 (replace last 3 numbers by 0)
123,000 is lower candidate. 123,000+1,000 = 124,000 is upper candidate.

I dont understand what you mean by "hundred place is 2".

Answer 76

ok

Answer 77

Estimate using front-end estimation.

87,260 + 3,475





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
83,000
B.
95,000
C.
90,000
D.
87,500

Answer 78

its answer is c

Answer 79

/

Answer 80

I would round 87,260 to 90,000 and 3,475 to 3,000. But 93,000 is not in the options.
I don't know then.

Answer 81

yes i m saying its answer is c

Answer 82

oh yes, here we should only estimate the result. You are right

Answer 83

yeh

Answer 84

Which expression is best suited for the clustering method of estimation?





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
27 ÷ 3 × 2
B.
45 ÷ 42 × 43
C.
89 - 89 - 79
D.
46 × 6 + 4

Answer 85

C? i am not used to this method..

Answer 86

nt this the 1st one

Answer 87

for this answer is
45/42*43

Answer 88

ok

Answer 89

this ryt ya wrong

Answer 90

Which expression is best suited for the clustering method of estimates?





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
14 ´ 24 ´ 34
B.
330 × 370 × 430
C.
94 × 97 × 93
D.
500 × 511× 525

Answer 91

C?

Answer 92

i say that because there are two very close numbers.

Answer 93

i dnt know this

Answer 94

hmm

Answer 95

may be

Answer 96

Which of the following expressions uses the best compatible numbers to estimate the problem below?

2,384 - 1,106





Select the best answer from the choices provided.
Select one of the options below as your answer:

A.
2,380 - 1,110
B.
2,400 - 1,100
C.
2,304 - 1,006
D.
2,500 - 1,000

Answer 97

numbers in A are closer.

Answer 98

i thnk its b