4 of them.
Three.
700
There is only one significant figure: 9.
1.00 x 10-4
5 significant figures Each figure that contributes to the accuracy of a value is considered significant. So 2.9979 has 5 significant figures. The 10^8 does not contribute to the accuracy as it simply indicates the number of trailing zeroes (i.e. 299,790,000) that are simply a result of rounding from the actual value (299,792,458)
Normally, times or multiplication tables cover the results of multiplying by 1 - 12. 1 x 103 = 103 2 x 103 = 206 3 x 103 = 309 4 x 103 = 412 5 x 103 = 515 6 x 103 = 618 7 x 103 = 721 8 x 103 = 824 9 x 103 = 927 10 x 103 = 1030 11 x 103 = 1133 12 x 103 = 1236
5 of them.
Number =[ ( 4.73 ) ( 103 ) ( 0.568 ) ] + 1.61 = 278
The number 1.84 x 103 has three significant figures, 1.84. The 103 part of the number does not count when determining significant figures.
To 1 significant figure, it would be 8 x 10^3.
(12-7/8) x (2/3) = (103/8) x (2/3) = 206/24 = 103/12 or (8 and 7/12)
3 of them.
4 of them.
615 times 38 is 23,370 rounding off to one significant figure it is 20,000
This has two significant digits, because the limiting datum is 12.
Three: 3, 9 and 0.