1. Systems of Measurement Lesson 4

2. Warm-up: 20 yards = ______ feet 40 inches = _____ feet ____ inches
6 yards = _____ inches
5679 mm = ______ m
4.5 km = _____ cm
124.5 cm = ______ m

3. Answers to Friday's Homework
2 km m
9L g
24in
48 in
26 in
53 in
37 in
63 in
1 ft 5 in

4. So far...
SI system -> SI system
Imperial -> Imperial

5. Today...
Conversions Between Different Systems
(Imperial -> SI, SI -> Imperial)

6. Why are conversions important?
Watch this!!

7. Investigate:Using your ruler, fill in the closest approximate conversions:
o 1mm = ____ in
o 1 cm = ____ in
o 1 in = ____ mm
o 1 in = ____ cm

8. *Glue in your notebook

9. Your conversion chart can be used for the unit - do not mark on it.
Examples:
90 ft into m 80 km into mi
32 yd into cm

10. Independent Practice:
Conversion Worksheet (due Tuesday)
*Conversion Quiz Wednesday!

11. Word Problem Application 1

13. Word Problem Application 2

15. Example 1
Maxime is a finishing carpenter who is replacing the case 
moulding around a double French door and the baseboards 
around the 4 walls of a living room. The dimensions of the 
rectangular living room are 20′ × 15'. The French door is along 
one of the 20′ walls, and the door frame measures
72" wide and 84" high.
Case moulding costs $9.50 a linear foot and baseboard costs 
$4.50 a linear foot. These items must be purchased in whole 
feet.
If Maxime’s labour charge is $8.50 a linear foot, what will be 
the total cost of this job?

16. Example 2
Kiri needs to replace the wooden fence that surrounds her 
yard. She measured her property, and it is 18 yards wide and 
12 yards deep. There is no fence in front of her house, and the 
gap in the fence at the front of the property is 42 feet, as 
shown in the diagram.
Kiri plans to replace the existing
fence pickets with 5-foot-long cedar
boards placed vertically. The boards
are 5 1/2 inches wide and will be
spaced 1/4 inch apart.
She placed an order for 275 boards.
Did she order enough boards?