IGCSE Mathematics Paper-1: Specimen Questions with Answers 5 - 8 of 324

Question 5

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The bearing of a parking P from the house H is . Find the bearing of H from P.

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Explanation

Here,

The bearing of parking P from the house H is and line HP is straight line which gives angle of .

So, needed bearing of house from parking will be: .

Question 6

Explanation

Here,

(a) Formula of Volume of Cone , where r = radius, h = height

So, here r = 25 cm and h = 228 cm.

So, Volume

(b) For answer in cubic meters:

So,

Question 7

Explanation

Here, Caroline has

• She buys kilogram of Oranges priced at 90 cents per kilogram.

So,

Then

• She also buys 2 watermelons at 50 cents per each price.

So, for 2 watermelons price =

So, she spends total of

Now,

So,

So, she has left

Question 8

Explanation

Here, number is 0.00578

(a) For making standard form of we need to shift the decimal point left to right three times which will give: .

(b) We need to correct 0.00578 to 2 significant figures (all non-zero digits are called as significant figures) which can be: because here after digit 7 there is 8 which is greater than 5, so 7 will get round up and be 8.

(C) We need to correct 0.00578 to 2 decimal places which can be: in which we have to consider two numbers after decimal point and the second number will be round up on the basis of third number.

Here, it means if third number is 5 or more than 5 then second number will be round up and be 1 from 0.