Question

$\frac{1}{20} = 0.05$. which calculation is not a way to find $\frac{14}{20}$?
$0.5 + 0.05$
$0.75 - 0.05$
$14 \div 20$
$14 \cdot 0.05$

Explanation:

Step1: Find value of $\frac{14}{20}$

First, calculate $\frac{14}{20}= 0.7$. Also, since $\frac{1}{20}=0.05$, we can use this to check other expressions.

Step2: Evaluate each option

• Option 1: $0.5 + 0.05 = 0.55

eq0.7$

• Option 2: $0.75 - 0.05 = 0.7$ (matches $\frac{14}{20}$)
• Option 3: $14\div20 = 0.7$ (matches $\frac{14}{20}$)
• Option 4: $14\times0.05 = 0.7$ (matches $\frac{14}{20}$ as $\frac{1}{20}=0.05$, so $14\times\frac{1}{20}=\frac{14}{20}$)

Answer:

The calculation that is NOT a way to find $\frac{14}{20}$ is $0.5 + 0.05$ (the first option with the expression $0.5 + 0.05$).