How_To_Be_Good_At_Math

190

Imperial units of length,

volume, and mass

Just like the metric system, the imperial system has many different units that

we can use to measure length, volume and capacity, and mass. We looked

at how this system compares with the metric system on pages 188-89.

MEASUREMENT • IMPERIAL UNITS OF LENGTH, VOLUME, AND MASS MEASUREMENT • IMPERIAL UNITS OF LENGTH, VOLUME, AND MASS

We could say the fish tank has a capacity

of 11 gallons.

Length can be measured in imperial units

called inches, feet, yards, and miles.

Look at this fish tank. We can measure

its capacity in pints. The capacity is 88 pints.

We can also measure capacity in an imperial

unit called gallons. There are 8 pints in 1 gallon,

so we usually use this unit to measure larger

containers or volumes of liquid.

Length Volume and capacity

Volume and capacity can be measured in

imperial units called pints and gallons. We

can also use cubic imperial units, such as cubic

inches and cubic feet. We looked at cubic units

on pages 180-181.

Yards are used to measure longer

distances. There are 3 feet in 1 yard,

so the cat is^1 / 3 yard tall.

Look at this cat. We can measure its

height in inches. The cat is 12 inches tall.

There are 12 inches in 1 foot, so we

can also say that the cat is 1 foot tall.

Miles are usually used to measure even

longer distances, like the distance between

two towns. There are 1760 yards in 1 mile.

HEIGHT (IN)

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

190_191_Imperial_units_vollengthmass.indd 190 29/02/2016 18:58