Power of Maths: Paper 1 – Section 2
1. Evaluate the following without using a calculator:
(a) 22 (b) 32 (c) 42 (d) 33 (e) 25 (f) 54 (g) 108 (h) 12013
(i) (−1)4
(j) (−1)21 (k) (−2)4 (l)
(m) (n) (o)
(a) 2−1 (b) 3−2 (c) 4−3 (d) 5−2 (e) 2− 4 (f) (3⋅6)−1
(g)
( 3 __
4 )
__ 2
3 −1 (h) 2−1 × 3
(−3)5 2
( 1 __
( 2 __
( 4 __
2 ) 3 ) 3 )
2 (t) 3
2. Evaluate the following without using a calculator:
(i) 2 × 3−1 (j)
(k) 3 −1 ___
___ 3 −1
2 2 (l)
(m) (–8)– 2 (n) (−3)−3
(o)
( 3 __
(b) 2 5 (c) 2 5 (d) 8
__ 3
4
(e) 3 6 − 1 __
2
(f) 6 4 − 1 __
3
(g) 6 × 3 6 − 1 __
2 (h) 2 × 1 6
__ 2
1
__ 2
1
__ 2
3 2 ) −3
3. Evaluate the following exactly: (a) 9
________ 3 −1 × 2 −1
1
( −2 1 _
2 ) 3 (p) (q) (r) (s)
EXERCISE 6 27 )
(q)
( − 1 __
( 3 1 _
( 2 3 _
( − 4 __
2 ) 5 )
3 (r) 2 (s)
2 ) 2 4 ) 2
( 8 ___
(t) 80
4. (a) Write 8 √ (b) Write 27 √
(c) Write 4 √
_____ 3
__ 3
____ 32 in the form 1
__ 2
(d) Write 49 √ √
_____ 3
__ 7
__ 7
(e) Write 125 × 5 2
________ 25 × √
__ 3
2
__ 5
where p ∈, p > 0: (a) a7 × a2 (b) (a7)3 (c) a7 × a−3
(i) 6 × 10 0 − 3 __
2 (j) 4 × 4 9 (l)
( 1 __
9 ) (p)
( 4 __
9 )
__ 2
1
(m) (100 000 000 ) 5
(n) (−8 )
__ 3
(o) 10 0 − 1 __
2
− 1 __
2
__ 4
3
__ 2
1
(k) 3 × 4 − 1 __
2
(d) a 7 __
(e) 3 √ a 3
__ a
(f) a √
(h) a __
__ a
(g) a 14 ___
a 2 a 3 (n) (m) in the form 5 p, p > 0.
5. Write the following in the form a p or 1 __
(i) (j)
___ √
a 2
__ a
___ a −3
a 2 (k) 3 √
__ a2
(l) √
__________ a −2 × ( a 3 ) −1 1
__ a × ( a 2 ) 3
____________ √
( a −2 )
__________ ( a −2 ) 2 × a −1
√
__ a 3 × ( a −2 )
__ a
__ 2
3
__ 2
× ( a 3 ) − 1 __
2 a p ,
__ 3
1 (u)
( − 8 ___
( − 8 ___
27 ) 27 )
__ 3
1 (v)
− 1 __
3 (w) (x)
( 1 ___
27 )
( 2 1 __
( 25 ___
4 ) 16 )
− 1 __
3
( − 1 ___
27 )
− 1 __
3
− 1 __
2
− 1 __
2
( 3 __
__ 2 in the form 2 p , p > 0.
in the form 3 p , p > 0.
__ 2 p , p > 0.
in form 7 p , p > 0. 2 ) 2
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