Compare Metric Capacities
Comparing metric capacities is a Grade 5 math skill in enVision Mathematics, Chapter 12: Convert Measurements. To compare capacities given in liters and milliliters, students convert both to the same unit (multiplying liters by 1,000 to get milliliters), then compare the numerical values. This real-world skill applies metric conversion in measurement contexts.
Key Concepts
To compare a capacity in liters ($L$) with a capacity in milliliters ($mL$), first convert them to the same unit. $$ \begin{array}{c} \text{Compare } a \text{ L and } b \text{ mL} \\ \downarrow \\ \text{Convert to mL: Compare } (a \times 1,000) \text{ mL and } b \text{ mL} \\ \text{OR} \\ \text{Convert to L: Compare } a \text{ L and } (b \div 1,000) \text{ L} \end{array} $$.
Common Questions
How do you compare a capacity in liters to one in milliliters?
Convert the liters to milliliters by multiplying by 1,000, then compare the two milliliter values using <, >, or =.
Is 2.5 L greater or less than 2,400 mL?
Convert 2.5 L to mL: 2.5 x 1,000 = 2,500 mL. Since 2,500 > 2,400, 2.5 L is greater than 2,400 mL.
Why must you convert to the same unit before comparing capacities?
Numbers with different units cannot be compared directly. Converting to the same unit lets you make a valid numerical comparison.
Where is comparing metric capacities taught in enVision Grade 5?
Chapter 12: Convert Measurements in enVision Mathematics, Grade 5.
How many mL are in 1.75 L?
1.75 x 1,000 = 1,750 mL.