Measurement
What unit would you use to measure the length of a pencil?
Centimeter
What is the perimeter of a rectangle that is 2 cm long and 3 cm wide?
10 cm
What is the perimeter?
The total distance around a shape.
If you want to estimate the length of a book, would you use inches or millimeters?
Inches
A fingertip is the same as a
centimeter
If a piece of string is 30 cm long, how many millimeters is that?
300mm
If a square has sides that are each 4 cm long, what is its perimeter?
16 cm
What does it mean to estimate?
To make a reasonable guess.
How can you estimate the perimeter of a square?
By multiplying one side length by 4.
A yard is the same as
3 feet
How do you find the length of a curve?
By using a piece of string paired with a ruler or measuring tape along the curve
How do you calculate the perimeter of a triangle?
By adding the lengths of all three sides
Define millimeter.
The width of a hair or the tip of a toothpick.
If you have a piece of string that looks about 10 cm, what would be a good estimate in millimetres?
About 100 mm
In Canada we mostly use the
metric system
Which is longer: 1 meter or 100 centimeters?
They are the same length
A polygon has a perimeter of 20 cm. If one side is 5 cm, what is the total length of the remaining sides?
15 cm
What does it mean to measure?
To find out the size, length, or amount of something.
If you need to estimate the length of a classroom, would you use a ruler or your footsteps?
Footsteps
The imperial system measures things in
feet, inches, pounds, Fahrenheit
Measure the length of your shoe in centimetres.
Answers will vary
If you have a pentagon with sides measuring 3 cm, 4 cm, 5 cm, 5 cm, and 3 cm, what is the perimeter?
20 cm
What is a decimetre?
It equals 10 cm
How can you quickly estimate the perimeter of a rectangle?
By doubling the length and width and adding.
A paperclip is the length of an
inch