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Maths
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Summary
The imperial unit system is another set of units that are not used as much nowadays, but are still seen in specific circumstances.
Here is a table of imperial units:
Measurement | Units |
Length | Inches, feet, yards, miles |
Area | Square inches, square feet, square miles |
Volume | Cubic inches, cubic feet, gallons, pints |
Mass | Ounces, pounds, stones, tons |
Speed | Miles per hour (mph) |
Note: Tons and tonnes are two different units of measure!
While there is no need to memorise any conversions related to imperial measurements, it is still important to be familiar with them when converting from either one imperial unit to another, or an imperial unit to a metric unit.
A bird weighs $3$ pounds. Given that $1$ pound $=16$ ounces, how much does the bird weigh in ounces?
The conversion rate is given:
$1$ pound $=16$ ounces
Multiply both sides by $3$ to find what $3$ pounds is equivalent to:
$3$ pounds $=16\times3$ ounces
$3$ pounds $=48$ ounces
The bird weighs $\underline{48 \ \text{ounces}}$.
Give an approximate conversion of $30$ pints to gallons to $1$ decimal place, given that $1$ litre $\approx1.75$ pints, and $1$ gallon $\approx4.5$ litres.
First, convert the $30$ pints to litres:
$1$ litre $\approx 1.75$ pints
$1$ pint $\approx \frac{1}{1.75}$ litres
$30$ pints $\approx (\frac{1}{1.75}\times30)$ litres
$30$ pints $\approx17.14$ litres
Then, convert the $17.14$ litres to gallons:
$1$ gallon $\approx4.5$ litres
$1$ litre $\approx \frac{1}{4.5}$ gallons
$17.14$ litres $\approx (\frac{1}{4.5}\times17.14)$ gallons
$17.14$ litres $\approx3.8095....$ gallons
$\underline{30 \ \text{pints} \approx3.8 \ \text{gallons} \ (1.d.p)}$
The imperial unit system is another set of units that are not used as much nowadays, but are still seen in specific circumstances.
Here is a table of imperial units:
Measurement | Units |
Length | Inches, feet, yards, miles |
Area | Square inches, square feet, square miles |
Volume | Cubic inches, cubic feet, gallons, pints |
Mass | Ounces, pounds, stones, tons |
Speed | Miles per hour (mph) |
Note: Tons and tonnes are two different units of measure!
While there is no need to memorise any conversions related to imperial measurements, it is still important to be familiar with them when converting from either one imperial unit to another, or an imperial unit to a metric unit.
A bird weighs $3$ pounds. Given that $1$ pound $=16$ ounces, how much does the bird weigh in ounces?
The conversion rate is given:
$1$ pound $=16$ ounces
Multiply both sides by $3$ to find what $3$ pounds is equivalent to:
$3$ pounds $=16\times3$ ounces
$3$ pounds $=48$ ounces
The bird weighs $\underline{48 \ \text{ounces}}$.
Give an approximate conversion of $30$ pints to gallons to $1$ decimal place, given that $1$ litre $\approx1.75$ pints, and $1$ gallon $\approx4.5$ litres.
First, convert the $30$ pints to litres:
$1$ litre $\approx 1.75$ pints
$1$ pint $\approx \frac{1}{1.75}$ litres
$30$ pints $\approx (\frac{1}{1.75}\times30)$ litres
$30$ pints $\approx17.14$ litres
Then, convert the $17.14$ litres to gallons:
$1$ gallon $\approx4.5$ litres
$1$ litre $\approx \frac{1}{4.5}$ gallons
$17.14$ litres $\approx (\frac{1}{4.5}\times17.14)$ gallons
$17.14$ litres $\approx3.8095....$ gallons
$\underline{30 \ \text{pints} \approx3.8 \ \text{gallons} \ (1.d.p)}$
Converting between metric and imperial units
FAQs
Question: How do you convert imperial units to metric units or other imperial units?
Answer: Use the conversion rate that you're given and multiply/divide your number by the conversion rate.
Question: What are imperial units?
Answer: Imperial units are a lesser used set of units of measure.
Theory
Exercises
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