Direct proportion
proportions, directly proportional quantities, dividing in a given ratio, map and plan scale
Exercises are drawn at random from a large bank - every click gives a different set.
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Problem
A recipe for 7 portions needs 1330 g of flour. How many grams are needed for 2 portions?
Choose the correct answer
Which quantities are directly proportional?
Problem
A distance of 2.5 km on the ground is drawn on a map with scale 1:50 000. How many centimetres long is the segment?
Problem
On a map with scale 1:1000 a segment is 9 cm long. How many metres is that distance on the ground?
Solve the proportion
x : 2.4 = 8 : 4
Problem
The angles of a triangle are in the ratio 2 : 9 : 7. Find the smallest angle of this triangle.
Complete the proportion
3/2 = 27/☐
Problem
An amount of money was split into two parts in the ratio 3 : 5. The smaller part is 360 zł. What was the whole amount?
Problem
A car uses 6 litres of petrol per 100 km. How many litres will it use on a 500 km route?
Choose the correct answer
A segment 5 cm long on a map matches a distance of 1.25 km on the ground. What is the scale?
This address is one particular set - everyone who opens it gets exactly the same exercises. Copy the link from the address bar and send it to the class. You can generate a new set at the top of the page.
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These exercises are part of it. On the board itself you can plot a function, write a formula in LaTeX, or solve a problem together with a teacher or a friend - live, in the browser. Our app is completely free.