CAIE IGCSE Mathematics Core C2.4 Indices Ii Topic Practice

Covered syllabus points

C2.4.1 Understand and use indices (positive, zero and negative).C2.4.2 Understand and use the rules of indices

[Maximum number: 2]

Simplify.

(a)

$y^{3} \div y^{5}$

[ 1 ]

$y^{-2}$ or $\frac1{y^2}$ final answer

(b)

$7 x^{0}$

[ 1 ]

[Maximum number: 1]

$\frac{7^{15}}{7^x}=7^9$
Find the value of x.
x=

[Maximum number: 1]

$k^{x} \times k^{5}=k^{20}$

Find the value of x.

x=

[Maximum number: 1]

Simplify.

$7 x^{0}$

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