Metric Length Units

Show your work for each problem.

1.
Which unit is the largest?
1. a)millimeter
2. b)kilometer
3. c)centimeter
4. d)meter
Answer: kilometer
A kilometer (km) is the largest unit. 'Kilo' means 1000, so 1 km = 1000 meters. The order from smallest to largest is: mm < cm < m < km.
2.
How many millimeters are in 1 centimeter?
Answer: 10
. This is the basic conversion between centimeters and millimeters.
3.
Convert 5 cm to millimeters.
Answer: 50
. When converting to a smaller unit, multiply.
4.
To convert from meters to centimeters, you should:
1. a)Multiply by 10
2. b)Divide by 100
3. c)Divide by 1000
4. d)Multiply by 100
Answer: Multiply by 100
Since , you multiply by 100. Going to a smaller unit means you need more of them.
5.
Convert 3 m to centimeters.
Answer: 300
.
6.
A book is 24 cm long. Convert this to millimeters.
Answer: 240
1. Are you going to a larger or smaller unit? smaller
2. Should you multiply or divide? multiply
3. What is the conversion factor from cm to mm? 10
4. Calculate: 240
7.
Convert 2 km to meters.
Answer: 2000
.
8.
Convert 60 mm to centimeters.
Answer: 6
. When converting to a larger unit, divide.
9.
Which measurement is equal to 1.5 m?
1. a)1500 mm
2. b)150 cm
3. c)15 cm
4. d)150 cm and 1500 mm
Answer: 150 cm and 1500 mm
and . Both are correct!
10.
A swimming pool is 25 m long. How many centimeters is that?
Answer: 2500
1. What is the conversion factor from m to cm? 100
2. Are you going to a smaller or larger unit? smaller
3. Calculate: 2500
11.
Convert 500 cm to meters.
Answer: 5
.
12.
A hiking trail is 7000 m long. How many kilometers is that?
Answer: 7
1. Are you going to a smaller or larger unit? larger
2. Should you multiply or divide? divide
3. What is the conversion factor? 1000
4. Calculate: 7
13.
A pencil is 175 mm long. Which is the same length?
1. a)1.75 cm
2. b)0.175 m
3. c)17.5 cm
4. d)17.5 cm and 0.175 m
Answer: 17.5 cm and 0.175 m
and . Both conversions are correct!
14.
Convert 2.5 km to meters.
Answer: 2500
.
15.
A table is 120 cm long. Convert this to meters.
Answer: 1.2
1. Are you going to a smaller or larger unit? larger
2. Should you multiply or divide? divide
3. What is the conversion factor from cm to m? 100
4. Calculate: 1.2
16.
Convert 45 mm to meters.
Answer: 0.045
1. How many mm are in 1 m? 1000
2. Are you going to a smaller or larger unit? larger
3. Calculate: 0.045
17.
Which is the longest?
1. a)5000 mm
2. b)5 m
3. c)500 cm
4. d)All are equal
Answer: All are equal
All three are equal! . Same length, different units.
18.
A road is 3.5 km long. How many meters is that?
Answer: 3500
.