Weight & Capacity — Answer Key
Part A: Sort the Words
Sort each word or number into the correct category box.
1. Sort each container by the better METRIC capacity unit: milliliters for small amounts, liters for large amounts.
Milliliters
EyedropperTeaspoonJuice box Liters
Swimming poolWater tankLarge bucket Milliliters measure tiny splashes like an eyedropper or teaspoon. Liters measure big volumes like pools, tanks, and buckets.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. An eyedropper holds only a few milliliters.
Eyedroppers release only a few drops, which is measured in milliliters, the small metric unit.
2. A swimming pool holds thousands of liters.
Pools hold huge amounts of water, so liters, the big metric capacity unit, are used.
3. One liter equals 1000 milliliters.
By definition, 1 liter equals 1000 milliliters, so liters measure larger volumes.
4. A teaspoon holds about 5 milliliters.
A standard teaspoon is about 5 milliliters, so milliliters are the right unit to use.
5. A large water tank holds many liters.
Water tanks store lots of water, so we count their capacity in liters, not milliliters.
Part C: True or False?
Read each statement. Circle True or False.
1. A teaspoon is measured in liters.
True False
A teaspoon holds only about 5 milliliters, so milliliters, not liters, are used.
2. A liter is bigger than a milliliter.
True False
Since 1 liter equals 1000 milliliters, a liter is much bigger than a milliliter.
3. Swimming pools are measured in milliliters.
True False
Pools hold huge volumes, which would be millions of milliliters, so liters are used.
4. Eyedroppers use milliliters to measure drops.
True False
Eyedroppers release just a few milliliters at a time, the correct small metric unit.