Converting Measurements — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A scientist measures 2,400 milliliters of solution and pours 1.5 liters into a beaker. How many milliliters remain?
A) 1,500 milliliters
B) 900 milliliters
C) 750 milliliters
D) 1,200 milliliters
Convert 1.5 liters to 1,500 milliliters first, then subtract: 2,400 - 1,500 = 900 milliliters remaining.
2. A hiking trail has three sections: 1.2 km, 800 m, and 2 km. What is the total trail length in meters?
A) 3,200 meters
B) 4,200 meters
C) 4,000 meters
D) 3,800 meters
Convert all sections to meters: 1.2 km = 1,200 m, 800 m stays the same, 2 km = 2,000 m. Then add: 1,200 + 800 + 2,000 = 4,000 meters.
3. A recipe needs 350 grams of cheese. A block of cheese weighs 1.2 kilograms. How many grams of cheese are left after making the recipe?
A) 750 grams
B) 850 grams
C) 950 grams
D) 1,050 grams
Convert 1.2 kilograms to 1,200 grams, then subtract the 350 grams used: 1,200 - 350 = 850 grams left.
4. A roll of fabric is 8 meters long. A tailor cuts 5 pieces, each 45 centimeters long. How many centimeters of fabric are left?
A) 575 centimeters
B) 625 centimeters
C) 550 centimeters
D) 600 centimeters
Convert 8 meters to 800 centimeters first. The tailor uses 5 × 45 = 225 centimeters, so 800 - 225 = 575 centimeters remain.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A runner completes a 5-kilometer race. That equals 5,000 meters.
Multiply 5 × 1,000 = 5,000 meters because each kilometer contains 1,000 meters.
2. A package weighs 3.75 kilograms. That equals 3,750 grams.
Multiply 3.75 × 1,000 = 3,750 grams because 1 kilogram equals 1,000 grams.
3. A tank holds 12 liters. That equals 12,000 milliliters.
Multiply 12 × 1,000 = 12,000 milliliters since each liter has 1,000 milliliters.
4. A desk is 150 centimeters wide. That equals 1.5 meters (use decimal).
Divide 150 ÷ 100 = 1.5 meters because there are 100 centimeters in each meter.
5. Two bags weigh 2,250 g and 1,750 g. Together they weigh 4 kilograms.
Add the bags first: 2,250 + 1,750 = 4,000 grams. Then divide 4,000 ÷ 1,000 = 4 kilograms.