Dimensional Analysis

Which of the following is correct scientific notation?

• 20.35 x 10⁴
• .2035 x 10⁴
• 2035 ⁴
• 2.035 x10⁴

Express the following in scientific notation:
.000457

• 457 x 10⁶
• 457 x 10^-6
• 4.57 x10⁴
• 4.57 x 10^-4

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

What is 0.658 rounded to 1 significant figure?

• 0
• 0.66
• 0.7
• 0.658

40 ft = __________ inches

• 400

• 3.3

• 480

• 12

The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?  (3 ft=1 yd)

• 0.867 ft
• 7.8 ft
• 8.07 ft
• 8.27 ft

The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?  (3 ft=1 yd)

• 0.867 ft
• 7.8 ft
• 8.07 ft
• 8.27 ft

You know that 12 inches = 1 foot.  Convert 60 inches to feet.

• 720 feet
• 5 feet
• 5 inches
• 72 feet

You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.

• 25 mg
• 25,000 mg
• 250 mg
• 2500 mg

Convert 40 ounces to pounds. (16oz = 1lb)

• 2.5 pounds

• 0.4 pounds

• 2/5 pounds

• 5 pounds