# 1.1 Imperial Measurements - PowerPoint PPT Presentation

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1.1 Imperial Measurements. MFM2P. In the beginning. Back in the day (1000s of years ago) when people built things themselves, it wasn’t necessary to measure things because everyone did it themselves. I need a bolt as wide as thumb. What you talkin’ ‘bout Willis?.

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1.1 Imperial Measurements

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## 1.1 Imperial Measurements

MFM2P

### In the beginning

• Back in the day (1000s of years ago) when people built things themselves, it wasn’t necessary to measure things because everyone did it themselves.

I need a bolt as wide as thumb

### What you talkin’ ‘bout Willis?

• However, projects became more complicated, it became necessary to have others work different parts, therefore they had to standardize measurement.

moron…

Sir, I don’t know what your thumb looks like…

### Birth of Imperialism

• So they decide to take the most popular guy, measure his thumb and call it an inch. This guy was the King!

An inch was the width of a thumb

A footwas the size of the kings foot, which eventually became 12 inches.

A yard was the distance from the tip of a man's nose to the end of his outstretched arm. Eventually, 3 feet became a yard

### Other systems

• The British empire used this method to devise measurements for mass, volume and time. For instance a pound was equal to 7002 troy grains

• Other countries developed their own units of measure

7001? That’s stupid! A pound should be 7002…

Your sands are no match for our stones!

What’s a troy grain? We use wheat seeds

### A new day

• Eventually (in the 1800s), the French developed the Metric System

• In the 1970s many commonwealth (former British colonies) switched to the metric system.

### Imperial Systems

• Today, the entire world is metric, except for the US, Myanmar and Liberia

### The Imperial Empire

Unfortunately, the US has a HUGE influence on our culture. This influences the way we communicate and think about various systems of measurement.

Time is in seconds, minutes, hours, days,etc…

How tall are you?  5 feet 10 inches

How much do you weight?  210 lb

Football field  yards

Fluids (Guinness) pint

### Going the distance…

Length

inches (inor “), foot (ftor ‘), yard (yd), mile (mi)

### Pump up the Volume!

Volume

Teaspoon (tsp), tablespoon (tbsp), fluid ounce (floz), cup (c), pint (pt), quart (qt), gallon (gal)

### Weight

Weight

Ounce (oz), pound (lb), ton (tn)

### If 1 yd = 3ft, then 4 yd2 = ft2

1 yd

3ft

4 yd2

2 yd

6 ft

36 ft2

2 yd

6 ft

Page 3 Question 3

### Converting Feet to Inches

1 foot = 12 inches

8.5’ = 8.5 feet

2’ 7” = 2‘ + 7”

3’ = 3 feet

= 8.5 x 12”

= (2 x 12”) + 7”

= 3 feet x 12 inches

1 foot

= 36”

= 102”

= 24” +7”

= 31”

Page 3 Question 4a

### Converting Inches to Feet

1 foot = 12 inches

71 inches =

How many times does 12 go into 71?

71 inches = 5 feet + ??? inches

71 inches = 5 feet + 11 inches

5’ = 60”

71” -60” = 11”

Page 3 Question 6

### Word Problems

The school gymnasium floor needs to be resurfaced. Hardwood flooring costs \$6 per square foot plus \$2.50 per square foot for installation. The gym measures 180ft by 220ft.

a)Size of gym = (length) (width)

= (220 ft) (180 ft)

= 39 600ft2 Therefore the gym is 39 600ft2.

b) Cost to buy hardwood = (\$6.00/ft2) (39 600ft2)

= \$237 600The cost of the hardwood is \$237 600.

c) Cost of Installation = (\$2.50/ft2) (39 600ft2)

=\$99 000Therefore the cost of installation is \$99 000