Take this 10-question quiz on measurement units and conversions. Choose the best answer for each question. Some questions use a picture. The explanations show the usual mistakes, such as dividing instead of multiplying.
Question 1 How many meters are in \(6\text{ km}\)?
A 600 mB 6,000 mC 60 mD 60,000 m1 km = 1,000 m, so 6 × 1,000 = 6,000 m. Only 600 m comes from using 100 by mistake.
Question 2 How many milliliters are in \(8\text{ L}\)?
A 800 mLB 80 mLC 8,000 mLD 80,000 mL1 L = 1,000 mL, so 8 × 1,000 = 8,000 mL. Adding too many zeros is a common slip.
Question 3 Look at the blocks. How many grams are in \(3\text{ kg}\)?1,000 g 1,000 g 1,000 g 3 kg = ? Each block is 1 kg = 1,000 g.
A 3,000 gB 300 gC 1,003 gD 30 gEach block is 1,000 g, so 3 × 1,000 = 3,000 g. 1,003 comes from adding instead of multiplying.
Question 4 How many ounces are in \(3\text{ lb } 5\text{ oz}\)?
A 8 ozB 53 ozC 35 ozD 48 oz3 lb = 3 × 16 = 48 oz, and 48 + 5 = 53 oz. 48 forgets the extra 5 ounces.
Question 5 How many seconds are in \(4\text{ min } 20\text{ sec}\)?
A 240 secB 260 secC 420 secD 24 sec4 × 60 = 240, and 240 + 20 = 260 sec. 420 just writes the numbers side by side.
Question 6 Which length is the greatest?
A 2 m 5 cmB 1 m 95 cmC 198 cmD 2 mIn centimeters: 2 m 5 cm = 205 cm, 1 m 95 cm = 195 cm, 198 cm, and 2 m = 200 cm. 205 is greatest.
Question 7 The show starts at the time on the clock (PM) and lasts \(1\text{ hr } 45\text{ min}\). When does it end?1 2 3 4 5 6 7 8 9 10 11 12 The clock shows 7:20.
A 9:15 PMB 8:05 PMC 9:00 PMD 9:05 PM7:20 + 1 hr = 8:20. Then 8:20 + 45 min = 9:05. Minutes roll over at 60.
Question 8 A \(1\text{ L}\) bottle has \(350\text{ mL}\) used. How much is left?350 mL used ? left 1 L = 1,000 mL 1 L = 1,000 mL.
A 750 mLB 1,350 mLC 650 mLD 350 mL1 L = 1,000 mL, and 1,000 - 350 = 650 mL. Adding gives 1,350, which is too much.
Question 9 A bag holds \(2\text{ kg}\) of flour. A recipe uses \(1{,}250\text{ g}\). How many grams are left?1,250 g used ? left 2 kg = 2,000 g 2 kg = 2,000 g.
A 1,750 gB 250 gC 3,250 gD 750 g2 kg = 2,000 g, and 2,000 - 1,250 = 750 g. Do not forget to change kilograms first.
Question 10 Ribbon costs $3 per meter. Mei buys 2 m 50 cm of ribbon. How much does she pay?
A $7.50B $6.00C $9.00D $10.502 m 50 cm is 2 and a half meters. Two meters cost $6, half a meter costs $1.50, and $6 + $1.50 = $7.50.
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