1. Choosing a scale Session 2 Length = 2m (200 cm) Width=1.5 m (150 cm)

2. 1 unit on the drawing represents
Scale 1:20
1 unit on the drawing represents
20 units in real life.

3. Scale 1:20 10cm 7.5 cm Real life Length = 2m (200 cm)
Width=1.5 m (150 cm)
Real life
To draw this on the paper divide the real length of the bed by /20= 10, so the drawing of my bed should have a length of 10 cm on the paper.
Length = 10 cm (200/20)
Width= 7.5 cm (150/20)
Drawing
10cm
7.5 cm
Scale 1:20

4. Real life L= 1m W=0.5m A book shelf is 1m long and 0.5 m wide.
1- Make a scale drawing of it
2- Work out the measurements for the scale drawing.
1- (Consider a scale of 1:20)
Real life
L= 1m
W=0.5m

5. From big to small multiply
From small to big divide

6. From m to cm: times by 100 From cm to m: divide by 100 Actual size in
From big to small multiply
From small to big divide
1.3m
0.5 m
3.2m
1.8m
From m to cm: times by 100
From cm to m: divide by 100
1.2m
3.5m
Actual size in
Size on plan in cm m cm
Scale: 1:50
I need to divide by 50 3
300
300 ÷ 50=6
1.3
130
130 ÷50= 2.6
1.8
180
180 ÷ 50 = 3.6
1.2
0.5
3.5
× 100
Scale 1:50
120
120÷50 50
50÷50=1

7. Real life measurements in mm Real life measurements in cm
Furniture item
Real life measurements in mm
Real life measurements in cm
Divide by 10
Real life measurements in m
Divide by 100
Single bed
L=2200
W= 1200
L= 220
W=120
L=220÷100=2.2
W=120÷100=1.2
Corner table
L=300
W=300
L=30
W=30
L=30÷100=0.3m
W=0.3m
Bookcase
L=500
L=50
L= 0.5
W=0.3
Chest of drawers
L=1200
W=500
L=120
W=50 L= W=
Beside table
L=400
L=40
Desk
W=600
W=60
From big to small multiply
From small to big divide
1m=100cm
1cm= 10mm
1m= 1000mm

8. Real life measurements in cm Divide measurement by 20 (scale 1:20)
Furniture item
Real life measurements in cm
Divide by 10
Divide measurement by 20 (scale 1:20)
Single bed
L= 220
W=120
L=220÷20=11 cm
W=120÷20=6 cm
Corner table
L=30
W=30
L=30÷20=1.5
W=30÷20=1.5
Bookcase
L=50
L= 2.5
W=1.5
Chest of drawers
L=120
W=50
L=6
W=2.5
Beside table
L=40
L=2
Desk
W=60
W=3

9. Single bed
L= 220
W=120
L=220÷20=11 cm
W=120÷20=6 cm
My single bed should have:
L= 11cm
W= 6cm
W= 6cm
L= 11cm

10. Corner table
L=30
W=30
L=30÷20=1.5
W=30÷20=1.5
L= 1.5 cm
W= 1.5 cm