When rounding 1286 to 2 significant figures, you must consider the first two non-zero digits from the left. In this case, those digits are 1 and 2. The digit to the right of 2 (8) is greater than 5, so you round up. Therefore, 1286 rounded to 2 significant figures is 1300.
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Well, honey, if we're talking about 1286 to 2 significant figures, it would be 1300. You see, the first two digits are 1 and 2, and the third digit, 8, is greater than 5, so we round that sucker up to 1300. Math can be a real hoot sometimes!
0.04567 to 2 significant figures is 0.046
It has 2 significant figures.
0.00348 to 2 significant figures results in: 0.0035
It is 6.7 when rounded to 2 significant figures
1,430 rounded to 2 significant figures is 1,400