Metric weights: different units
for 4th grade

Compare weights in different metric units

To compare weights in different metric units and choose the heaviest item, you need to first convert all weights to the same unit. The most commonly used metric units for weight are grams (g) and kilograms (kg), with 1 kg equal to 1,000 g. Here's how to compare weights in different units and find the heaviest item:

1. Convert all weights to the same unit: Choose a common unit, either grams or kilograms, and convert all the weights to that unit. This will make it easy to compare the weights.
   For example, let's say you have three items with the following weights: 1.5 kg, 950 g, and 1,250 g. To compare these weights, convert the one in kilograms to grams: 1.5 kg x 1,000 = 1,500 g
2. Compare the converted weights: Now that all the weights are in the same unit (grams, in our example), you can easily compare them to determine the heaviest item. In out example, you can see that the first item has a mass of 1,500 g which is greater than 950 g or 1,250 g so it is the heaviest item.

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This topic gives you the mass of 3 items in mixed decimal units. You are required to determine which is the heaviest item by converting all items to the same units and comparing them.