Question

which expression can be used to find the number of servings in 1 kilogram of food? 1÷0.2 how many groups of 0.2 do you need to make 1 whole? image of a rectangle divided into parts 3 groups of 0.2 4 groups of 0.2 5 groups of 0.2 image of a dog with text: bellas food, serving size: 0.2 kg, total amount: 1 kg

Explanation:

First Sub - Question (Expression to find servings)

Step1: Understand the problem

We know the total amount of food is 1 kg and each serving is 0.2 kg. To find the number of servings, we divide the total amount by the amount per serving.

Step2: Form the expression

The formula for the number of servings \(n=\frac{\text{Total amount}}{\text{Amount per serving}}\). Here, total amount = 1 kg and amount per serving = 0.2 kg. So the expression is \(1\div0.2\).

Second Sub - Question (Number of groups of 0.2 to make 1)

Step1: Calculate \(1\div0.2\)

We know that dividing by a decimal can be converted to dividing by a fraction. \(0.2=\frac{2}{10}=\frac{1}{5}\). So \(1\div0.2 = 1\div\frac{1}{5}\).

Step2: Simplify the division

When we divide by a fraction, we multiply by its reciprocal. So \(1\div\frac{1}{5}=1\times5 = 5\). So we need 5 groups of 0.2 to make 1 whole.

Answer:

• The expression to find the number of servings in 1 kilogram of food is \(1\div0.2\).
• The number of groups of 0.2 needed to make 1 whole is 5 groups of 0.2.