Printable · GCSE Foundation · ages 14-16

Calculating with roots and indices worksheet — GCSE Foundation

Fifteen questions on "calculating with roots and indices" — DfE statement N7. Print it, or print three versions so neighbours cannot copy by letter; the key gives the letter for each version.

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Calculating with roots and indices worksheet — GCSE Foundation

Maths · GCSE Foundation · N7 · Calculating with roots and indices · 15 questions

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1.Simplify 5⁻² × 5⁴, giving your answer as a single power of 5.
(a)5⁻⁶
(b)5²
(c)5⁻⁸
(d)5⁶
2.Work out the value of $1 0^{- 3}$ .
(a)1000
(b)−1000
(c)0.001
(d)−0.001
3.Work out the value of $2^{3} + 3^{2}$ .
(a)17
(b)72
(c)12
(d)−1
4.Work out the value of 5³.
(a)8
(b)53
(c)125
(d)15
5.A square petri dish has an area of 121 mm². A scientist wants to know its side length. Work out the side length of the dish.
(a)22 mm
(b)242 mm
(c)60.5 mm
(d)11 mm
6.Work out the value of ∛8.
(a)24
(b)2
(c)4
(d)64
7.Simplify 2³ × 2⁴, giving your answer as a single power of 2.
(a)2¹²
(b)2¹
(c)4⁷
(d)2⁷
8.Work out the value of √49 + ∛27
(a)10
(b)34
(c)16
(d)21
9.Work out the value of 2⁻⁴
(a)16
(b)−16
(c)1/8
(d)1/16
10.Simplify (y³)⁴, giving your answer as a single power of y.
(a)y¹²
(b)12y
(c)y⁷
(d)y⁸¹
11.Write down the value of 7⁰
(a)1/7
(b)1
(c)7
(d)0
12.Write down the value of 3⁰
(a)3
(b)0
(c)1/3
(d)1
13.Work out the value of 2⁻²
(a)4
(b)−4
(c)1/4
(d)−1/4
14.Simplify x⁶ ÷ x²
(a)x¹²
(b)x³
(c)x⁸
(d)x⁴
15.Simplify x⁷ × x⁴, giving your answer as a single power of x.
(a)x¹¹
(b)11x
(c)x³
(d)x²⁸

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