2.5 Class Quiz 14: Scale and Proportion
Quiz by Ms Choi
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- Q1
Jason saves $4 each day. How long does he take to save$32?
7 days
5 days
8 days
6 days
45s - Q2
The weight of metal cube A of side 3 cm is 350 g. What will be the weight of metal cube B of side 6 cm? (Assume that the weight of a metal cube and its volume are in direct proportion.)
2 800 g
175 g
700g
1400 g
60s - Q3
A lorry can travel 90 km by consuming 4.2 L of petrol. How far can the lorry travel with16.1 L of petrol?
345 km
234.8 km
133.1 km
171.5 km
120s - Q4
10 pumps are used to empty a water tank in 1 minute and 39 seconds. How many pumps are needed to empty the tank in 55 seconds? (Assume that water is pumped away by each pump at the same rate.)
8
16
20
18
60s - Q5
The scale of a map is 1 : 50 000. If the length of a river on the map is 13.5 cm, what is its actual length?
2.7 km
6.7 km
2.75 km
6.75 km
60s - Q6
The figure below shows a photo of a snowman with a scale of 1 : 15. If the diameter of the snowman’s head in the photo is 2.1 cm, find its actual diameter.
7.14 cm
30.5 cm
31.5 cm
14 cm
60s - Q7
The figure shows a scale drawing of a cup.The height of the cup in the drawing is 2.4 cm. If the actual height of the cup is 9.6 cm, find the scale of the drawing.
1: 2.5
1: 0.4
1: 4
1: 0.25
60s - Q8
Express the scale 4 m : 25 mm in the form 1 : n.
1 : 0.006 25
1 : 0.625
1 : 160
1 : 1.6
45s - Q9
On a photo with a scale of 3 cm : 1 mm, the length of an insect is 6 mm. Find the actual length of the insect.
0.2 mm
1.8 cm
18 cm
2 mm
45s - Q1060s
