3800000
0.036 The significant figures are indicated by the square brackets 0.0[35550], so we round this part of the figure.
72 is 72.2 rounded to two significant figures.
0.004560 to two significant figures results in: 0.0046
8468 rounded to 2 significant figures is 8500
1.0
It is 640.
To round 296124 to two significant figures, we focus on the first two digits, which are 29. The next digit is 6, which is greater than 5, so we round up. Therefore, 296124 rounded to two significant figures is 300000.
Just cut off the numbers at the eight: 48,000,000
To round 0.009999991 to two significant figures, you first identify the first two significant digits, which are 0.0099. Since the third significant digit is a 9, you round up, resulting in 0.010. Therefore, expressed with two significant figures, 0.009999991 rounds to 0.010.
72.8 round to two is 73.
76.51 rounded to 1 significant figures would be 77
To round 644 to two significant figures, you look at the first two digits, which are 6 and 4. The next digit is 4, which is less than 5, so you do not round up. Therefore, 644 rounded to two significant figures is 640.