Worksheet for Calculations-1

Worksheet for Calculations-1 - Total = 2000 kcal Step 2:...

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Page 1 of 2 Intro to Nutrition Fall 2007 Worksheet for Calculations 1) One piece of Little Caesar’s pepperoni pizza contains 22 grams of carbohydrates, 9 grams of protein, and 8 grams of fat. What percent of kilocalories from fat are in this piece of pizza? ANSWER: Step 1 22 g carbohydrates x 4 kcal/g = 88 kcal 9 g protein x 4 kcal/g = 36 kcal 8 g fat x 9 kcal/g = 72 kcal 196 kcal in piece of pizza Step 2 kcal from fat/ total kcal in product 72 kcal/196 kcal = .367 Step 3 Change to percentage .367 x 100% = 36.7% of kcal come from fat 2) Calculating the percentage of kilocalories from macronutrients A person consumes a diet which contains 275 gm Carbohydrate, 75 gm Protein, and 67 gm Fat. Calculate the percentages of carbohydrate, protein and fat consumed. ANSWER: Step 1 275 grams CHO x 4 kcal/gram = 1100 kcals 75 grams Protein x 4 = 300 kcal 67 grams Fat x 9 = 600 kcal (rounded from 603)
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Unformatted text preview: Total = 2000 kcal Step 2: 1100 kcal divided by 2000 kcals x 100 = 55% of calories/CHO 300 kcals, divided by 2000 x 100 = 15% of calories/Protein 600 kcal (rounded), divided by 2000 x 100 = 30% of calories from fat In summary: CHO (grams) x 4 = ____ divided by total kcals x 100 = % CHO kcals Prot (grams) x 4 = _____ divided by total kcals x 100 = % Protein kcals Fat (grams) x 9 = _____ divided by total kcals x 100 = % Fat kcals Page 2 of 2 4) Food Labels A label on a package of Bagel Crisps reads as follows: Calories: 130 Calories from Fat: 45 How many grams of fat does this product contain per serving? Answer: 45 calories from fat Each gram of fat contains 9 calories, 45/9 = 5 grams What is the percentage of calories contributed by fat? Answer: Total calories = 130 Calories from fat = 45 45/130 = .346 x 100 = 35% of calories from fat...
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Worksheet for Calculations-1 - Total = 2000 kcal Step 2:...

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