4th Grade Measurement Units and Conversions Quiz: 10 Questions with Explanations

A 600 mB 6,000 mC 60 mD 60,000 m

1 km = 1,000 m, so 6 × 1,000 = 6,000 m. Only 600 m comes from using 100 by mistake.

A 800 mLB 80 mLC 8,000 mLD 80,000 mL

1 L = 1,000 mL, so 8 × 1,000 = 8,000 mL. Adding too many zeros is a common slip.

A 3,000 gB 300 gC 1,003 gD 30 g

Each block is 1,000 g, so 3 × 1,000 = 3,000 g. 1,003 comes from adding instead of multiplying.

A 8 ozB 53 ozC 35 ozD 48 oz

3 lb = 3 × 16 = 48 oz, and 48 + 5 = 53 oz. 48 forgets the extra 5 ounces.

A 240 secB 260 secC 420 secD 24 sec

4 × 60 = 240, and 240 + 20 = 260 sec. 420 just writes the numbers side by side.

A 2 m 5 cmB 1 m 95 cmC 198 cmD 2 m

In centimeters: 2 m 5 cm = 205 cm, 1 m 95 cm = 195 cm, 198 cm, and 2 m = 200 cm. 205 is greatest.

A 9:15 PMB 8:05 PMC 9:00 PMD 9:05 PM

7:20 + 1 hr = 8:20. Then 8:20 + 45 min = 9:05. Minutes roll over at 60.

A 750 mLB 1,350 mLC 650 mLD 350 mL

1 L = 1,000 mL, and 1,000 – 350 = 650 mL. Adding gives 1,350, which is too much.

A 1,750 gB 250 gC 3,250 gD 750 g

2 kg = 2,000 g, and 2,000 – 1,250 = 750 g. Do not forget to change kilograms first.

A $7.50B $6.00C $9.00D $10.50

2 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.