Convert Measurement Units Within Systems - 4th Grade Math

$3000\ \text{m}$. Multiply 3 × 1000 since 1 km = 1000 m.

$(1,12),(2,24),(3,36),(4,48)$. Each foot value is multiplied by 12 to get inches.

$1\ \text{km} = 1000\ \text{m}$. Kilo- means 1000, so 1 kilometer equals 1000 meters.

$1\ \text{m} = 100\ \text{cm}$. Centi- means 1/100, so 100 centimeters make 1 meter.

$1\ \text{kg} = 1000\ \text{g}$. Kilo- means 1000, so 1 kilogram equals 1000 grams.

$1\ \text{l} = 1000\ \text{ml}$. Milli- means 1/1000, so 1000 milliliters make 1 liter.

$1\ \text{lb} = 16\ \text{oz}$. A pound contains 16 ounces in the customary system.

$1\ \text{hr} = 60\ \text{min}$. An hour contains 60 minutes.

$1\ \text{min} = 60\ \text{sec}$. A minute contains 60 seconds.

$1\ \text{hr} = 3600\ \text{sec}$. 60 minutes × 60 seconds = 3600 seconds in an hour.

$1\ \text{ft} = 12\ \text{in}$. A foot contains 12 inches in the customary system.

$180\ \text{min}$. Multiply 3 × 60 since 1 hr = 60 min.

$0.75\ \text{l}$. Divide 750 ÷ 1000 since 1000 ml = 1 l.

$2000\ \text{ml}$. Multiply 2 × 1000 since 1 l = 1000 ml.

$3\ \text{lb}$. Divide 48 ÷ 16 since 16 oz = 1 lb.

$96\ \text{oz}$. Multiply 6 × 16 since 1 lb = 16 oz.

$1.2\ \text{kg}$. Divide 1200 ÷ 1000 since 1000 g = 1 kg.

$5000\ \text{g}$. Multiply 5 × 1000 since 1 kg = 1000 g.

$4.5\ \text{m}$. Divide 450 ÷ 100 since 100 cm = 1 m.