2.540x10^4
0.019807 rounds to 0.01981
2.31 has 3 significant figures 4 has 1 significant figure 8.123 has 4 significant figures
Non-zero numbers are always significant and leading zeros are never significant. So 0.007222 has 4 significant figures so rounding to 3 would give you 0.00722.
5020 has 3 significant figures. It could also have 4 significant figures if, for example, 5019.6 was rounded to 4 significant figures.
57.50
0.6000
2.540x10^4
0.019807 rounds to 0.01981
Starting at the second digit after the decimal, if it is between 0 and 4, you round the first digit down. If it is between 5 and 9, you round it up. If the third digit is between 0 and 4, you round the second digit down. If it is between 5 and 9, you round the second digit up. Rounded to.......... 1 signifcant figure: .3 2 significant figures: .29 3 significant figures: .294 4 significant figures: .2943 5 significant figures: .29430
1.000 x 10^5
To round 48100231 Joules to two significant figures, you would round it to 48000000 Joules since the first two significant figures are 4 and 8. The trailing zeros are not significant.
4 significant figures.
There are four significant figures in 41.05. This includes all non-zero digits and any zeros between them.
There are 3 significant figures in 94.2.
4 significant figures.
2.31 has 3 significant figures 4 has 1 significant figure 8.123 has 4 significant figures