Question

How many significant figures do the following numbers contain? 1.001 4 Correct: Your answer is correct. 3.45 3 Correct: Your answer is correct. 3.450 4 Correct: Your answer is correct. 0.01 1 Correct: Your answer is correct. .010 2 Correct: Your answer is correct. 1.230e-04 6 Incorrect: Your answer is incorrect. 0.11e-04 6 Incorrect: Your answer is incorrect. 1.233 + .1 4 Incorrect: Your answer is incorrect. 1.233*.1 4 Incorrect: Your answer is incorrect. 1.233/.01 4 Incorrect: Your answer is incorrect.

Answer 1

1.001 4 Correct: Your answer is correct.

3.45 3 Correct: Your answer is correct.

3.450 4 Correct: Your answer is correct.

0.01 1 Correct: Your answer is correct.

0.010 2 Correct: Your answer is correct.

1.230e-04=1.230x10^-4 It has 4 significant figures Since there are 3 decimal places and four significant figures.

0.11e-04 6= 0.11x10^-4 It has 2 significant figures Since there are 2decimal places and two significant figures.

1.233 +0.1 has one significant figure.

When quantities are added or subtracted, the number of decimal places in the answer is equal to the number of decimal places in the quantity with the smallest number of decimal places

1.233 ---> 4 significant figures

0.1 has one signifiant figure.

1.233*0.1     

1.233 has 4 significant figures & 0.1 has one significant figure

So the result has one significant figure.

1.233/.01

1.233 has 4 significant figures & 0.01 has one significant figure

So the result has one significant figure.