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Q: What is 2.643 rounded 2 significant figure?

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1686 rounded to 2 significant figures is 1700

It is 7500 rounded to two significant figures

2

It is then 0.067 when rounded to 2 significant figures

12

Rounded to 2 significant figures it is 0.043

At least 1 and at most 7. It could be 3,999,999.9 rounded to 7 significant figures; It could be 3,999,999 rounded to 6 significant figures; It could be 4,000,015 rounded to 5 significant figures; It could be 4,000,429 rounded to 4 significant figures; It could be 3,999,999 rounded to 3 significant figures; It could be 4,049,999 rounded to 2 significant figures; It could be 4,492,467 rounded to 1 significant figure.

It is 6.7 when rounded to 2 significant figures

5286 you can type "2643*2" into google and it will show you the answer

2711 rounded to 2 significant digits is 2700

1,430 rounded to 2 significant figures is 1,400

009999991 rounded to 2 significant digits is 1.0e7

(2 000 000ft) x (1mi/5280ft) = 379mi = 400mi (rounded to 1 significant figure)

It is 1300 rounded to 2 significant figures

0.0034

The first step in taking any number to 1 significant figure is to find the greatest non-zero digit. In this case it is the 2, as that represents 2 tenths. The next step is to look at the next digit on. If it is 5, 6, 7, 8 or 9 we need to round up. Otherwise, we can leave it as it is. The next digit is 0, so we don't need to round up. Therefore 0.209 rounded to 1 significant figure is 0.2

The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.

The rules for rounduing off numbers are as follows :- 1) If the first figure to be discarded is 5 or more, then the previous figure is increased by 1. Example : 5.1935 = 5.194 (4sf) = 5.19 (3sf) = 5.2 (2sf) = 5 (1sf) 2) Zeros must be kept to show the position of the decimal point or to indicate that zero is a significant figure. 1347 . . . when rounded to 3 significant figures then the 7 is discarded so 4 increases to 5. Thus, 1347 becomes 1350 (3sf). When rounded to 2 significant figures it becomes 1400 and to one significant figure 1000.

Density = mass / volume = 12.9 grams / 8 cm3 = 1.6125 = rounded to one significant figure = 2 grams/cm3.

0.6942 rounded off to 2 significant figures is 0.69

6,596 rounded to two significant figures is 6,600

8.0325 rounded to two significant figures results in 8.0.

There are an infinite number of possibilities. For instance, 1000000000 - 99999997357 = 2643 999999999 - 99999997358 = 2643 1 + 2642 = 2643 2 + 2641 = 2643 etc, etc

The 2 is significant.

99.9 rounded to 2 significant figures is 1.0e2

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