Multiplying/Dividing in Scientific Notation
Multiply
(4.8 x 105 km) x (2.0 x 103 km)
9.6 x 108 km2
What is the equation to find percent error?
Round 431,801 kg up to four signifigant figures.
431,800 kg
6.32 x 106 kL + 5.34 x 106 kL
1.157 x 107 kL
Divide
(8.42 x 108 kL) / (4.21 x 103 kL)
2.00 x 105
The accepted length of a steel pipe is 5.5 m. Calculate the percent error for a steel pipe that is 5.2 m.
5.45%
Round 0.004 384 010 cm to four signifigant numbers.
0.004 384 cm
3.57 x 102 mL - 1.43 x 102 mL
2.14 x 102 mL
Multiply
(3.33 x 10-4 m) x (3.00 x 10-5 m)
9.99 x 10-9 m2
The accepted density for copper is 8.96 g/mL. Calculate the percent error if a sample of copper has a density of 8.86 g/mL.
1.12%
How many signifigant figures will the answer to 8.95 x 105 - 7.34 x 103 have? (do not solve)
3 signifigant figures
7.21 x 103 mg + 43.8 x 102 mg
1.159 x 104 mg
Divide
(3.3 x 10-4 mL) / (1.1 x 10 mL)
3.0 x 10-5
The accepted length of a steel pipe is 5.5 m. Calculate the percent error for a steel pipe that is 5.1 m.
7.27%
Round the answer of 7.31 x 104 + 3.23 x 103 up to the correct number of significant figures.
7.63 x 104
6.48 x 10-3 mm - 2.81 x 10-3 mm
3.67 x 10-3 mm
Multiply
(2.2 x 105 g) x (3.1 x 102 g)
6.82 x 107 g2
The accepted density for copper is 8.96 g/mL. Calculate the percent error if a sample of copper has a density of 9.09
1.45%
Round the answer of 9000 km / 94529 km up to the correct number of significant numbers.
0.1
4.68 x 10-5 cg + 3.5 x 10-6 cg
5.03 x 10-5 cg