

Operações com Números Decimais
Interactive Video
•
Mathematics
•
7th Grade
•
Practice Problem
•
Medium
Used 4+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ao somar números decimais, qual é a regra fundamental para alinhar os números?
Alinhar os últimos algarismos.
Alinhar as vírgulas.
Alinhar os primeiros algarismos.
Alinhar os números inteiros.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
No número 8,96, qual é o valor posicional do algarismo 9?
Unidade
Centésimo
Décimo
Milésimo
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Melissa comprou 3 cadernos, cada um custando R$ 8,96. Quanto ela gastou no total?
R$ 17,92
R$ 24,88
R$ 26,88
R$ 27,00
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual operação matemática é uma forma abreviada de adição de parcelas iguais?
Subtração
Divisão
Multiplicação
Adição
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se um item custa R$ 12,45 e você compra 5 unidades, quanto você gasta?
R$ 50,25
R$ 60,00
R$ 62,25
R$ 65,00
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ao multiplicar um número com duas casas decimais por um número inteiro, quantas casas decimais o resultado final deve ter?
Uma
Duas
Três
Nenhuma
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
José comprou 3,2 metros de tecido que custava R$ 6,95 o metro. Para calcular o valor total, como se deve iniciar a multiplicação?
Multiplicar 6,95 por 3,2 diretamente, alinhando as vírgulas.
Multiplicar 695 por 32, ignorando as vírgulas inicialmente.
Multiplicar 6 por 3 e 95 por 2.
Somar 6,95 e 3,2.
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