Question 1: Convert 150 centimeters to meters.

Answer: 1.5

Question 2: A recipe calls for 300 grams of sugar. Convert this to kilograms.

Answer: 0.3

Question 3: Express the ratio of 24 hours to 1 day in its simplest form.

Answer: 24:1

Question 4: A car travels 180 kilometers in 3 hours. Convert the speed to kilometers per hour.

Answer: 60

Question 5: Plot the graph of y = 2x for x values from 0 to 5.

Answer: Points: (0,0), (1,2), (2,4), (3,6), (4,8), (5,10)

Question 6: Construct a triangle with sides 4 cm, 6 cm, and 8 cm on the grid.

Answer: Students draw on grid

Question 7: A student converts 45 minutes into hours. What mistake might they make? Identify and correct it.

Answer: Common mistake: dividing by 60 incorrectly or misreading. Correct answer: 0.75 hours.

Question 8: A map scale shows 1 cm representing 5 km. Convert 12 cm on the map to real distance.

Answer: 60

Question 9: A recipe requires 200 grams of flour. Express this as a ratio to 1 kilogram of flour.

Answer: 200:1000 or 1:5

Question 10: Convert 3 liters to milliliters.

Answer: 3000

Question 11: A cyclist covers 45 km in 1.5 hours. Convert this to km/h and explain the conversion process.

Answer: Speed = Distance / Time = 45/1.5 = 30 km/h

Question 12: Identify and correct the common mistake: Converting 2 hours to minutes by multiplying by 60.

Answer: Correct method: multiply by 60. Mistake: students may confuse conversion directions or think to divide. Correct correction: 120 minutes.