- Length: Metric unit of lengths are used in meters, kilometers, centimeters, millimeters, etc.
|
10 millimeters (mm) |
1 centimeter (cm) |
|
10 centimeters |
100 millimeters |
|
100 centimeters |
1 meter (m) |
|
1000 meters |
1 kilometer (km) |
|
1 Foot |
12 Inch |
|
1 Mile |
5280 Feet |
- Capacity: It can be measured in liters, kiloliters, etc.
|
Kiloliter (kl) |
1,000 liters |
|
Liter (l) |
1 liter |
|
Centiliter (cl) |
0.01 liter |
|
Milliliter (ml) |
0.001 liter |
|
1 Pound(lb) |
16 Ounce (oz) |
- Mass: Mass is generally the measurement of weight and there are three main units of mass considered as M, Kg, S.
|
M |
The meter of length |
|
Kg |
The kilogram of mass |
|
S |
The second for timed |
Example:
- Convert 7.5 km into meters.
Sol: 1 km = 1000 m
⇒7.5 km = (7.5×1000) m = 7500 m
- Convert 753 mm into cm
Sol: 1 mm = 0.1 cm = 1/10 cm
⇒ 753 mm = 75.3 cm
- Convert 746 kl into liters.
Sol: 1 liter = 1000 kl
⇒ 746 kl = 746/1000 liters = 0.746 liters
- How many foot are there is 48 inches?
Sol: 1 Foot = 12 inches
⇒ 48 inches = (48/12) foot = 4 foot
- Convert 9.7 kg into grams.
Sol: 1 kg = 1000 gm.
IMPORTANT: Units should be same while addition and subtraction of numbers.
⇒9.7 kg = 9.7×1000 = 9700 grams
Practice Exercise
- Seema runs 2.86 km every day. How far does Seema run in a week?
- Varun is 3.12 m tall. His younger brother is 28 cm taller than him. What is his brother’s height?
- The length of tower A is 335.6 m and the length of tower B is 456.4 m. By how many meters tower B is taller than tower A?
- Convert the following:
- 02 m = ____ cm
- 5436 m = ____ km
- 765 mm = ____ cm
- 89 liter = ____ ml
- 167 oz = ____ lb
- Add following:
- 68 km 20 m and 23 km 21 m
- 245 grams and 4.5 kg
- Subtract:
- 750 grams from 8 kg
- 238 liters from 6 kl
RECAP
- 1 km = 1000 m, 1 kg = 1000 gm, 1 kl = 1000 l
- 1 meter = 100 cm
- 1 cm = 10 mm
- 1 foot = 12 inches
- 1 Pound = 16 ounce
- Make sure the units of amounts should be same at the time of addition and subtraction. You cannot add 100 gm and 100 kg.
