302.150 1 st significant figure Significant figures 0.005106 Significant figures 1 st significant figure.

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Presentation transcript:

st significant figure Significant figures Significant figures 1 st significant figure

(1)First we place the cut-off point after the 4th significant figure: | 9 1 (2) The digit after the cut-off point is 5 or more, so the digit before it is increased by 1: | 9 1 (3) The digits after the cut-off point are removed: | (4) There are no gaps to fill between the cut-off point and the decimal point, so our answer is: (4 sf.)

(1)First we place the cut-off point after the 2nd significant figure: 3 4| (2) The digit after the cut-off point is not 5 or more, so the digit before it is unchanged: 3 4| (3) The digits after the cut-off point are removed (but not the decimal point): 3 4|_ _. _ (4) The gaps between the cut-off point and the decimal point are filled with zeroes (2 sf.)

(1)First we place the cut-off point after the 2nd significant figure: 3. 6 | 4 2 (2) The digit after the cut-off point is not 5 or more, so the digit before it is unchanged: 3. 6 | 4 2 (3) The digits after the cut-off point are removed: 3. 6 | (4) There are no gaps to fill between the cut-off point and the decimal point, so our answer is: 3. 6 (2 sf.)

(1)First we place the cut-off point after the 1st significant figure: | 2 3 (2) The digit after the cut-off point is not 5 or more, so the digit before it is unchanged: | 2 3 (3) The digits after the cut-off point are removed: | (4) There are no gaps to fill between the cut-off point and the decimal point, so our answer is: (1 sf.)

(1)First we place the cut-off point after the 3rd significant figure: | (2) The digit after the cut-off point is 5 or more, so the digit before it is increased by 1: | (3) The digits after the cut-off point are removed and replaced with zero’s: | (4) The gaps between the cut-off point and the decimal point are filled with zeroes (3 sf.)