Question

7523987 To 1 Significant Figure

Answer 1

When you have significant figures, you have to round up or down to the closest ten, hundred, tenth, hundredth, etc.

For example, 3471 to 2 significant figures would be 3500. 3 and 5 are the significant figures. You round up to 3500 and not down to 3400 because the next digit after 3 and 4 is 7. 5 or higher rounds up.

Answer 2

thanks

Answer 3

You're welcome. Do you know your answer?

Answer 4

but whats the answer?

Answer 5

Apply what I have written to your situation.

First step, how many significant figures do you need?

Answer 6

1 significant figure

Answer 7

So you have to round 7,523,987 up or down with only 1 significant figure. Do you have a guess?

Answer 8

7,500.000

Answer 9

this is my homework http://intranet.cramlingtonlv.co.uk/Mathsnet/lessons/Year7and8/Year7/Stretch/lessonA/Decimal_Places_Significant_Figures.pdf

Answer 10

7,500,000 has 2 significant figures: 7 and 5. Incorrect. Try again?

Answer 11

7,000,000

Answer 12

did you check the homework

Answer 13

Close.

The figure next to 7 is 5. And, you always round numbers 5, 6, 7, 8, and 9 up.

Answer 14

Yes, I looked at the homework. We can move on to other problems when you get this one.

Answer 15

ok
is it 7,000,987

Answer 16

No, 7,000,987 has 7 significant figures: 7, 0, 0, 0, 9, 8, and 7

Answer 17

oh

Answer 18

You have to round 7,523,987 down to 7 million or up to 8 million

Answer 19

7,100,000

Answer 20

7,100,000 has 2 significant figures.

Answer 21

7 and 1

Answer 22

Plus, you wouldn't round to 7,100,000 when 7,523,987 round to either 7,500,000 or 7,600,000

Answer 23

7,000,001

Answer 24

You have to round 7,523,987 down to 7 million or up to 8 million

Answer 25

8,000,000

Answer 26

Yes

Answer 27

Pick another problem that asks you to give 1 significant figure.

Answer 28

4623.33621 rounded by to decimal places

Answer 29

Ok, let's switch to decimal places.

Answer 30

Do you have a guess?

Answer 31

462.336213

Answer 32

You took the 3 out and put it at the end?

Answer 33

yes

Answer 34

Why did you do that?

Answer 35

dunno i think it could be 4623.33

Answer 36

Yes, 4623.33 is close.

Answer 37

But, you made a mistake when rounding.

Answer 38

4623.332

Answer 39

Not quite, 4623.332 has 3 decimal places

Answer 40

You only need 2

Answer 41

4623.32

Answer 42

4623.34

Answer 43

You rounded down. You need to round up. Because it is 4623.336, the 6 means you round the 3 up to 4

Answer 44

i did

Answer 45

look at the answer

Answer 46

2nd 1

Answer 47

Yes, 4623.34

Answer 48

Understand that there is a delay. We are instant messaging after all :)

Answer 49

Ok, you got that one. Try another.

Answer 50

963 to 1 significant feature

Answer 51

EXCuse me!

Answer 52

Do you have a guess?

Answer 53

Still with me?