Answer:
Step-by-step explanation:
A clerk sold a customer 70 centimeters of fabric. The clerk filled out the invoice appropriately, indicating:
1 point
a) 0.07 m
b) 0.070 m
c) 0.070 cm
d) 0.70 m
The clerk sold 70cm of fabric.
She needs to fill out the invoice, ensuring that the length of the fabric is recorded in meters.
According to the metric system:
100cm = 1m
So,
70 cm = x
100cm = 1m
Cross multiplication gives:
70 cm × 1m = x × 100cm
Dividing both sides by 100cm yields:
x = 70 cm × 1 m / 100cm
cm cancels out
x = 70 × 1m / 100
x = 70m / 100
x = 0.7m.
Therefore, the correct answer is D.
To Portuguese
O balcão vendeu 70 cm de tecido
Consequentemente, ela precisa preencher a fatura, mas a medida dos tecidos vendidos deve ser em metros.
De unidades métricas
100cm = 1m
Portanto,
70 cm = x
100cm = 1m
Multiplicação cruzada
70 cm × 1m = x × 100 cm
Divida os dois lados por 100cm
Então,
x = 70 cm × 1 m / 100 cm
cm cancela
x = 70 × 1m / 100
x = 70m / 100
x = 0.7m.
Assim, a resposta correta é D.
