Fractions
100 – Pumpkin Pies
Problem: Grandma baked 4 pies. Each pie has 8 slices. If 18 slices were eaten, what fraction of the pies were eaten?
Answer: 9/16
Work:
Total slices = 4 × 8 = 32.
Fraction eaten = 18/32 → simplify by 2 → 9/16.
100 – Sale on Cranberries
Problem: A $4 bag is 25% off. Sale price?
Answer: $3.00
Work:
25% of 4 = 0.25 × 4 = 1.
4 − 1 = 3.
100 – Chairs Around the Table
Problem: 8 tables, 6 chairs each. Total chairs?
Answer: 48 chairs
Work:
6 × 8 = 48.
100 – Cups of Gravy
Problem: 48 tablespoons. How many cups? (16 tbsp = 1 cup)
Answer: 3 cups
Work:
48 ÷ 16 = 3.
100 – Sharing Pies
Problem: 5 pies for 10 people. Pie per person?
Answer: 1/2 pie
Work:
5 ÷ 10 = 1/2.
200 – Mashed Potatoes
Problem: A recipe needs 3/4 cup milk per batch. You triple it. How much milk?
Answer: 2 1/4 cups
Work:
(3/4) × 3 = 3/4 × 3/1 = 9/4 = 2 1/4.
200 – Turkey Shrinkage
Problem: A 20 lb turkey loses 15% while cooking. Final weight?
Answer: 17 lb
Work:
15% of 20 = 0.15 × 20 = 3.
20 − 3 = 17.
200 – Cornbread Mix
Problem: 2 1/2 cups cornmeal per pan, 3 pans. Total cups?
Answer: 7 1/2 cups
Work:
2 1/2 = 2.5.
2.5 × 3 = 7.5 = 7 1/2.
200 – Turkey Timing
Problem: 15 minutes per pound, 12 lb turkey. Cook time?
Answer: 3 hours
Work:
15 × 12 = 180 minutes = 3 hours.
200 – Dinner Cost
Problem: $120 dinner for 8 guests. Cost per person?
Answer: $15
Work:
120 ÷ 8 = 15.
300 – Apple Pies Left
Problem: Out of 5 pies, 3 2/5 were eaten. How many remain?
Answer: 1 3/5 pies
Work:
5 − 3 2/5 = 5 − 3.4 = 1.6 = 1 3/5.
300 – Stuffing Fans
Problem: 30% of 120 students like stuffing. How many?
Answer: 36 students
Work:
0.30 × 120 = 36.
300 – Pumpkin Seeds
Problem: 275 seeds per pumpkin, 6 pumpkins. Total seeds?
Answer: 1,650 seeds
Work:
275 × 6 = 1,650.
300 – Measuring Flour
Problem: 4 1/2 cups; 1 cup = 8 oz. How many ounces?
Answer: 36 oz
Work:
4.5 × 8 = 36.
300 – Gratitude Cards
Problem: 48 cards split among 6 classes. Cards per class?
Answer: 8 cards
Work:
48 ÷ 6 = 8.
400 – Turkey Sandwiches
Problem: You have 7/8 lb turkey. Each sandwich uses 1/8 lb. How many sandwiches?
Answer: 7 sandwiches
Work:
(7/8) ÷ (1/8) = (7/8) × (8/1) = 7.
400 – Pie Contest
Problem: 75% of 24 pies are pumpkin. How many pumpkin pies?
Answer: 18 pies
Work:
0.75 × 24 = 18.
400 – Family Drive
Problem: 65 miles there and 65 back. Used 5 gallons total. Average mpg?
Answer: 26 mpg
Work:
Total miles = 65 + 65 = 130.
130 ÷ 5 = 26 mpg.
400 – Travel Distance
Problem: 132 km to miles. Use 1 mile ≈ 1.6 km.
Answer: 82.5 miles
Work:
Miles = 132 ÷ 1.6 = 82.5.
400 – Pie Party
Problem: Each guest eats 1/3 of a pie. For 12 guests, how many full pies?
Answer: 4 pies
Work:
12 × (1/3) = 12/3 = 4.
500 – Sweet Potatoes
Problem: One pan needs 2 2/3 lb sweet potatoes. You make 4 pans. Total pounds?
Answer: 10 2/3 lb
Work:
2 2/3 = 8/3.
(8/3) × 4 = 32/3 = 10 2/3.
500 – Leftover Cookies
Problem: You had 80 cookies and gave away 45%. How many remain?
Answer: 44 cookies
Work:
45% of 80 = 0.45 × 80 = 36.
80 − 36 = 44.
500 – Volunteer Meals
Problem: 180 meals split evenly among 12 volunteers. Meals per person?
Answer: 15 meals
Work:
180 ÷ 12 = 15.
500 – Temperature Drop
Problem: From 68°F down to 41°F. Change?
Answer: 27°F
Work:
68 − 41 = 27.
500 – Harvest Mix
Problem: Mix uses 2 cups nuts, 3 cups pretzels, 5 cups cereal. What fraction is cereal?
Answer: 1/2
Work:
Total = 2 + 3 + 5 = 10.
Fraction cereal = 5/10 = 1/2.