Mass and Liquid Volume

Choose grams or kilograms, and milliliters or liters.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 75

Mass is how heavy something is. A gram is very light, like a paper clip. A kilogram is 1,000 grams, about as heavy as a big book.
This apple is about 200 grams. The scale's numbers go up by 100.
Liquid volume is how much liquid fits. A milliliter is just a few drops. A liter is 1,000 milliliters, a big water bottle.
This beaker has 400 milliliters of water.

Georgia's K-12 Mathematics Standards:

4.MDR.6.1 — Use the four operations to solve problems involving elapsed time to the nearest minute, intervals of time, metric measurements of liquid volumes, lengths, distances, and masses of objects, including problems involving fractions with like denominators, and also problems that require expressing measurements given in a larger unit in terms of a smaller unit, and expressing a smaller unit in terms of a larger unit based on the idea of equivalence.