NÚMEROS RACIONAIS E POTÊNCIA

Quiz
•
Mathematics
•
8th Grade
•
Hard
Alvania Araujo
Used 4+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O valor da dízima 3,21212121… em fração geratriz é:
318/90
318/99
318/9
317/99
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Encontre a fração geratriz para realizar as seguintes operações entre números decimais:
1,1212121212… + 1,17
22683/990
22783/99
22683/9900
2268/9900
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Fração geratriz de 2,53030 ...
2505/990
nda
2505/99
2505/9
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
O valor da expressão 20x3 + 2x2y5, para x = - 4 e y = 2 é:
-400
400
256
-256
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
( 36 . 3-2 ) : 34 é igual a:
0
1
3-3
3-8
Ver Resposta
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Simplificando a expressão (a3 · b-7 · a2) : (a2 · b-4)2, encontraremos:
a/b
a.b
b
a²b
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O Valor da expressão numérica (-5)2- 42 + (1/5)0 / 3-2 + 1
5/4
1
-4
9
8.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Uma mercadoria que custava R$ 450,00 reais sofreu um reajuste de 15% de acordo com a inflação do período. Qual é o seu preço atual?
R$ 517,50.
R$ 517,80.
R$ 517
nda
9.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
0,66666... + 0,25252525... – 0,77777...
11/99
13/90
14/99
14/90
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