Dimensional analysis check

How many hours are in a year?

(Hint: 24 hrs = 1 day; 365 days = 1 year)

• 8760 hrs

• 8670 hrs

• 525,600 hrs

How many seconds are in a day?

(60 s = 1 min; 24 h = 1 day; 60 min = 1 h)

• There are only seconds in a minute.

• 1440 sec

• 86,400 sec

• 84,600 sec

How many gallons are in 64 quarts?

(Hint: 4 qt = 1 gal)

• 16 gal

• 0.25 gal

• 0.75 gal

• 1.5 gal

The length of a desk is 3.5 feet. How many centimeters is the length?

(2.54 cm = 1 inch; 1 ft = 12 in)

• 60 cm

• 120.23 cm

• 106.68 cm

• 117.12 cm

You know 10³ or 1000 mg = 1 g. Convert 2.5 grams into milligrams.

• 25 mg

• 25,000 mg

• 250 mg

• 2500 mg

How many kilograms of calcium are there in 173 pounds of calcium?

(1 lb = 454 g; 1 kg = 10³ or 1000 g)

• 1.10 kg

• 78.5 kg

• 110 kg

• 78500 kg

How many inches are in 1 mile? (5280ft = 1mi; 12in = 1ft)

• 66330in

• 63360in

• 63660in

• 63066in

Tags

CCSS.2.MD.A.2

How many minutes are in a school year, 184 days?

(24 h = 1 day; 60 min = 1 hr)

• 269,280 min.

• 16, 200 min.

• 16, 156 min.

• 264,960 min.

How many miles will a person run during a 10.0 kilometer race?

(1 km = 10⁵ or 100,000 cm; 2.54 cm = 1 in; 12 in = 1 ft; 5280 ft = 1 mi)

• 6.2 miles

• 6.21 miles

• 1.61 miles

• 1.6 miles

If a person weighs 125.0 lbs, how many milligrams do they weigh?

(2.2 lbs = 1 kg; 1 g = 1000 mg; 1 kg = 1000 g)

• 56,820, 000 mg

• 56,818,181 mg

• 56, 820 mg

• 56, 818 mg