CAIE IGCSE Mathematics Extended E2.1 Introduction to Algebra Topic Practice

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Covered syllabus points

E2.1.1 Know that letters can be used to represent generalised numbers.E2.1.2 Substitute numbers into expressions and formulas.

Question 1

[Maximum number: 1]

Gaya spends $ 48 to buy books that cost $ x each.

Write down an expression, in terms of x, for the number of books Gaya buys.

Question 2

[Maximum number: 2]

I=M(k2+c2)I=M(k^2+c^2)

Find the value of I when M=7, k=3 and c=2.

I=

Question 3

[Maximum number: 3]

Question (a)

(a)

Another club sells season tickets for individuals and for families. In 2018, the number of season tickets sold is in the ratio family: individual =2: 7.

[ 3 ]

Question (i)

(i)

The number of family season tickets sold is x.

Write an expression, in terms of x, for the number of individual season tickets sold.

[ 1 ]

Question (ii)

(ii)
Figure for Question (ii) — CAIE IGCSE Mathematics Extended

In 2019, the number of family season tickets sold increases by 12 and the number of individual season tickets sold decreases by 26.
Complete the table by writing expressions, in terms of x, for the number of tickets sold in 2019.

[ 2 ]
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