1. 5 Minute Math
7. Multiply the fractions below. Include a drawing to show your understanding and reduce to the simplest form.
8. Represent the following by using multiplication.

2. Estimating & Measuring the Dimensions of an Object Establishing Relationships Between Units of Measure for Length

3. Learning Goal
Today we will be learning about different units of measure so that we can understand the relationship between different units of measure for length.
We’ll know we’ve got it when we are able to estimate and measure the dimensions of an object using conventional units.

4. Vocabulary Centimetre Decimetre Equivalency Fraction Kilometre Length
Millimetre
Natural Number
Perimeter
Unit of Measure
Width

5. Measuring Length
The international system of units is used for measuring length.
The metre is the base unit for this system.
Kilometre
Hectometre
Decametre
Metre
Decimetre
Centimetre
Millimetre km hm
dam m dm cm mm

6. Representing Length Units of measure represent length in a precise way
There are units for smaller objects and units for bigger ones

7. Representing Length Unit of Measure Useful for Measuring…
Millimetre (mm)
Length of an ant
Thickness of a piece of string
Centimetre (cm)
Length of a magnifying glass
Thickness of a sandwich
Decimetre (dm)
Height of a microscope
Length of a hand
Metre (m)
Size of a building
Dimensions of a classroom
Kilometre (km)
Distance between 2 cities

8. Conversion Table
Unit km hm
dam m dm cm mm
Equiv. 1 10
100
1 000
10 000
0.001
0.01
0.1
To move up or down the conversion table, multiply by 10 or divide by 10
Each unit of measure is 10 times greater than the unit to its right
Each unit of measure is 10 times smaller than the unit to its left