Significant Digits Help..?

Question

1.) What is the result of 1.58÷3.793 using significant figures?

A) 4.1656
B) 4.166
C) 4.17
D) 4.2

2. Calculate the following problem and express your answer with the correct number of significant digits: 123.09 - 1.7

A) 121.39
B) 122
C) 121.4
D) 121.38

3.) Which of the following has three significant digits?
A) 305.0 cm
B) 1.0008 mm
C) 0.0600 m
D) 7.060 X 1010

4. A rectangle is 325 cm long and 150 cm wide. What is its area? Give the response in significant digits)
A) 4.875 m2
B) 4.87 m2
C) 4.80 m2
D) 4.9 m2

5. Round each of the following number to two significant digits: 0.98029
A) 98
B) 9.8 x102
C) .0980
D) .98

6. Calculate the following problem and express your answer with the correct number of significant digits 3 x 16
A) 48
B) 4.80
C) 49
D) 50

7. Round the following numbers to two significant digits: 371,883
A) 371,000
B) 370,000
C) 371880
D) 300000

8. Which of the following has three significant digits?
A) 305.0 cm
B) 0.0500 mm
C) 1.00081 Kg
D) 8.060 x 101 m

Answer 1

Significant Digits Help..?

1.) What is the result of 1.58÷3.793 using significant figures?



4.16E-1



2. Calculate the following problem and express your answer with the correct number of significant digits: 123.09 - 1.7





C) 121.4





3.) Which of the following has three significant digits?



C) 0.0600 m



4. A rectangle is 325 cm long and 150 cm wide. What is its area? Give the response in significant digits) ans is 4.875 but since you have 3 sig figs, use only 3.



B) 4.87 m2



5. Round each of the following number to two significant digits: 0.98029



D) .98



6. Calculate the following problem and express your answer with the correct number of significant digits 3 x 16



50





7. Round the following numbers to two significant digits: 371,883

A) 371,000



8. Which of the following has three significant digits?



B) 0.0500 mm

Answer 2

Instead of just giving you the answers let's look at what makes significant figures:



All nonzeroes count. So if you have the number: 6.04 , the 6 and the 4 are non zeroes, so they both count. If you have 0.00504, the 5 and 4 are nonzeroes, so they both count as nonzeroes.



The second rule is the zero between numbers are all significant. So in the example 6.04, the 0 is significant. In the example 0.00504, the 0 between the 5 and 4 are significant.



The third rule is all zeroes after the first nonzero are signficant. So in 6.00, the 0′s after the 6 are significant.



The fourth rule is all zeroes before the first nonzero are not significant, and don’t count. So if you have 0.00054 – so the preceeding zeroes do not count.



The fifth rule has to do with exact numbers. Exact numbers have infinite number of significant figures. So if you have 1 inch, you have 2.54 cm, but this number has infinite number of sig figs.





So figure it out! :)

Answer 3

that is 3 in the two one in each and every of those. The 0 is barely substantial no remember if that is after yet another quantity or decimal. as an occasion, 0.02 would in basic terms be 2 sig figs because of the fact the 0 on the front isn't substantial.