Significant Figures and Calculations

Calculate 5.50 cm + 5.50 cm and give your answer with the appropriate number of significant figures.

• 11 cm
• 11.0 cm
• 11.00 cm
• 11.000 cm

How many significant figures will be in the answer to the following question:
7.62 x 6.98 x 3.2645

• 1
• 2
• 3
• 4

Calculate 12.34 + 1.234 + 0.1234

• 13.6974
• 13.697
• 13.70
• 13.7

Calculate 345.009 g - 23.009 g and give your answer with the appropriate number of significant figures.

• 322.00 g
• 322 g
• 322.000 g
• 322

Calculate 12.34 + 1.234 + 0.1234 and give your answer with the appropriate number of significant figures.

• 13.6974
• 13.697
• 13.70
• 13.7

7.8 x 5.501

• 42.9078

• 42.908

• 42.91

• 42.9

• 42

5.40 x 7.90

• 42.66

• 42.7

• 43

• 40

What is 78.5 rounded to one significant figure?

• 79

• 78.5

• 70

• 80

In division and multiplication, the answer should have the same number of significant figures as the

• number in the calculation with the fewest significant figures.

• number in the calculation with the most significant figures.

• average number of significant figures in the calculation.

• total number of significant figures in the calculation.

The number of significant figures in the measurement 170.040 km is

• three

• four

• five

• six