It is 1570000 rounded to 3 significant figures
The number 10.989 rounded to 3 significant figures is 11.0
1760
5.00x10^6
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.
1100 to 3 significant figures is 1.10e3
2808 into 3 significant figures is 2810
0.0000004799 into 3 significant figures is 4.80e-7
1.557727 to 3 significant figures afer the decimal point is = 1.558
19.972
e A number that has only 1 significant figure can't be rounded to 3 significant figures
0.000039 as you have to round it up. 3 and 8 are the significant figures but as you must round up, the answer becomes 0.000039.
It is 1570000 rounded to 3 significant figures
The number 10.989 rounded to 3 significant figures is 11.0
22.4
79,700
304