Números Inteiros
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Medium
VANIA KRUCOSKI
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Assinale apenas os números que representam o conjunto dos inteiros.
" { 0, 1, 2, 3, …}"
" {…, – 3, – 2, – 1, 0, 1, 2, 3, …}"
" {…, – 3, – 2, – 1, }"
Answer explanation
Os Números inteiros são formados por todos os números positivos e negativos inteiros.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(+2) + (+5)
+5
+7
+2
-7
Answer explanation
Adição de números inteiros positivos sempre resulta em número positivo
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Resolva a operação ao lado e marque a resposta correta.
+7
+1
-7
2
Answer explanation
Na adição de inteiros sempre mantem- se o sinal do parênteses.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O resultado de (+40)- (+47) é:
7
87
-7
0
37
Answer explanation
Subtrair dois números inteiros é o mesmo que adicionar o primeiro com o oposto do segundo
5.
MATCH QUESTION
3 mins • 1 pt
Resolva as multiplicações e divisões em Z
+7
(+2).(-15)
-30
(+35):(+5)
-35
(-6).(-2)
+12
(+7).(-5)
+22
(-44): (-2)
Answer explanation
Na multiplicação e divisão de números inteiros e só realizar a operação normal e aplicar regra de sinais.
6.
MATCH QUESTION
1 min • 1 pt
Atenção ao jogos dos sinais
-
- com +
positivo
+ com -
+
+ com +
-
- com -
+
sinais iguais
Answer explanation
Regra de sinais:
Sinais iguais positivo
Sinais diferente negativo
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1440 : { 30 . [ 20 + ( 49 - 35 ) . 2 ] }
2
15
1
4
Answer explanation
Nas expressões numéricas usamos parênteses ( ), colchetes [ ] e chaves { } sempre que for necessário alterar a prioridade das operações.
Quando aparecer esses símbolos, iremos resolver a expressão da seguinte forma:
1º) as operações que estão dentro dos parênteses 2º) as operações que estão dentro dos colchetes 3º) as operações que estão dentro das chaves
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