Compare the following numbers:
(i) 2.7 × 1012 ; 1.5 × 108
(ii) 4 × 1014 ; 3 × 1017
Using laws of exponents, simplify and write the answer in
exponential form:
(i) 32 × 34 × 38
ii) 615 ÷ 610
(iii) a3 × a2
iv) 7x × 72
(v) (52)
3 ÷ 53
Simplify
(i) (–2)
3 × (–10)
3
(ii) (–3)
2 × (–5)
2
Simplify and express each of the following in exponential form:
(i) (23 × 34 × 4)/ (3 × 32)
(ii) ((52)
3 × 54) ÷ 57
Answers
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1
Answer:
1. 2.7×1012=2732.4
2. 1.5×108=162
3. 4×1014=4056
4. 3×1017=3051
simplify
(i) (–2)
3 × (–10)3
=-6×-30
=180
(ii) (–3)
2 × (–5)2
= -6 × -10
=60
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