Question

kelpe used 3.5 cups of batter to make a cake. he wants to know how much batter was used in fluid ounces.
(a) create a double number line that shows 3.5 cups in fluid ounces. use the fact that 1 cup = 8 fluid ounces.
(b) how much batter was used in fluid ounces?

Explanation:

Step1: Define conversion factor

1 cup = 8 fluid ounces

Step2: Label double number line

Left number line (cups): Mark 0 and 3.5
Right number line (fluid ounces): Mark 0 and the value we calculate next.

Step3: Calculate total fluid ounces

$3.5 \times 8 = 28$

Answer:

(a) Double number line:

• Left (cups): 0, 3.5
• Right (fluid ounces): 0, 28

(b) 28 fluid ounces