Question 1: Calculate: 3/4 - 1/4

Answer: 2/4 or 1/2

Question 2: Calculate: 5/6 - 1/3

Answer: 5/6 - 2/6 = 3/6 = 1/2

Question 3: Simplify the result of 7/8 - 3/4.

Answer: 7/8 - 6/8 = 1/8

Question 4: Compute: 2/3 - 1/6.

Answer: 4/6 - 1/6 = 3/6 = 1/2

Question 5: Subtract: 4/9 - 1/3.

Answer: 4/9 - 3/9 = 1/9

Question 6: Solve: 5/10 - 1/5.

Answer: 5/10 - 2/10 = 3/10

Question 7: A recipe calls for 3/4 cup of sugar. You use 1/2 cup. How much more sugar do you need?

Answer: 3/4 - 1/2 = 2/4 - 1/2 = 1/4

Question 8: A painter has 5/6 of a gallon of paint. After painting, 1/3 of a gallon remains. How much paint was used?

Answer: 5/6 - 1/3 = 5/6 - 2/6 = 3/6 = 1/2 gallon used

Question 9: Construct a diagram to subtract 2/5 from 3/4 on the grid. Show the steps.

Answer: Students will draw a visual representation dividing the grid into parts to illustrate the fractions and subtraction.

Question 10: A container has 7/8 liters of juice. You pour out 3/4 liters. How much is left? Show reasoning.

Answer: 7/8 - 3/4 = 7/8 - 6/8 = 1/8 liters left

Question 11: Calculate: 9/10 - 2/5, and explain any common mistake students might make.

Answer: 9/10 - 4/10 = 5/10 = 1/2; Mistake: subtracting denominators directly.

Question 12: What is the difference between 11/12 and 5/8? Show your working.

Answer: 11/12 - 5/8 = (22/24) - (15/24) = 7/24

Question 13: Identify and correct the mistake in subtracting 2/3 - 1/2 when a student computes 1/3.

Answer: Incorrectly subtracting numerators or denominators directly; correct approach: find common denominator 6, then subtract: 4/6 - 3/6 = 1/6.