Question 1: Calculate the difference between 87 and 45.

Answer: 42

Question 2: Find the difference when 123 is subtracted from 200.

Answer: 77

Question 3: What is the difference between 56.78 and 49.23?

Answer: 7.55

Question 4: Subtract 0.75 from 2.50 and find the difference.

Answer: 1.75

Question 5: Calculate the difference between 500 and 235.

Answer: 265

Question 6: A shop has $1,245.75. After a sale, the amount reduces to $987.60. What is the difference?

Answer: 258.15

Question 7: The difference between two numbers is 85. If one number is 147, what is the other number?

Answer: 62

Question 8: Construct a triangle on the grid where the difference between the lengths of two sides is 5 units. Draw and label the sides.

Answer: Students will draw a triangle with two sides differing by 5 units

Question 9: If the difference between two numbers is 13, and one number is 29, what is the other number? Show two possible answers.

Answer: 16 or 42

Question 10: A student calculates the difference between 83.5 and 78.2 as 5.3. Identify and correct the mistake.

Answer: Correct difference is 5.3, but the calculation should be 83.5 - 78.2 = 5.3 (which is correct). If mistake is in subtraction, e.g., misaligned decimal points, point out that the correct answer is 5.3.

Question 11: A container has 380 liters of water. If 127 liters are used, what is the remaining amount? Find the difference.

Answer: 253