Exercícios 9ª ano 12/02

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1)      Calcule as potências:

a) 10²                       b) (–7)²                   c) (–4)³                      d) (2,5)²             e) 6¹

f) (–3/4)²                 g) (√3)¹                   h) (–1/2)³                   i) (–1,3)²            j) (–0,6)³

l) – 8²                      m) 3⁵                       n) 5^–2                        o) 7^–1                p) (–2)^–2

q) (–10)^–3                r) 4¹                         s) 4⁰                          t) (–10)^–3          u) (–15)⁰

v) (–15)¹                 x) 4³                         z) (1/3)^{– 2}

2)      Preencha as lacunas com  =  ou  ≠ :

a) 2⁶ ------  2⁵                  b) 1⁶------- 1⁵           c) 0⁶------ 0⁵               d) (–1)⁶ ------ (–1)⁵

e) 8²-----(–8)²                 f) (–2)⁵----  –2⁵         g) –6²-----(–6)²           h) (–5)³------ 5³