Presentation on theme: "1-5 Measuring in Metric Units"— Presentation transcript:
1 1-5 Measuring in Metric Units You’ll Learn: To use and convert metric units of measure.
2 Metric Units Type Unit Reference Example Length Millimeter (mm) Centimeter (cm)Meter (m)Kilometer (km)About the thickness of a dimeAbout the width of your little fingerAbout the distance from a doorknob to the floorAbout the length of 11 football fieldsCapacityMilliliter (mL)Liter (L)A small spoon holds about 5 mLA little more than 1 quartMassMilligram (mg)Gram (g)Kilogram (kg)About the mass of a mosquitoAbout the mass of a paper clipAbout the mass of a bunch of bananas
3 Metric Length Relationships UnitKilo-meterHecto-meterDeca-metermeterDeci-meterCenti-meterMilli-meterSymbolkmhmdammdmcmmmValue1,000m100m10m1m0.1m0.01m0.001 m
4 Choosing a Reasonable Estimate When trying to measure using the metric system, it is important to estimate so that you can accurately choose a tool to measure.Choose a reasonable estimate:Height of a classroom3 cm 3 m 3 kmMass of a bag of flour2.3 mg 2.3 g 2.3 kg
5 Choose a reasonable estimate and explain your choice. Capacity/Volume of a soup bowl:180 mL 180 L 180 kLMass of a Butterfly:500 mg 500 g 500 kgHeight of an oak tree:22 cm 22 m 22 km
6 Multiplying to Change Units You can change a measurement from one unit to another by finding the relationship between the two units and multiplying.
7 Metric Relationships Unit Kilo-meter Hecto-meter Deca-meter meter Deci-meterCenti-meterMilli-meterSymbolkmhmdammdmcmmmValue1,000m100m10m1m0.1m0.01m0.001 mUnitKilo-gramgramMilli-gramSymbolkggmgValue1,000g1g0.001 gUnitliterMilli-literSymbolLmLValue1L0.001 L
8 Step 1Decide if the conversion you are trying to do is going from a larger unit to a smaller unit or from a small unit to a larger unit.mL to Lkm to mcm to m
9 Step 2 Decide how many of the missing unit fits into the known unit. 245 mL = _____ L1 mL = LHint:If you are going from big to small, your missing unit value should be a WHOLE number.If you are going from small to big, your missing unit value should be a DECIMAL.mL is smaller than LSmall to Big We use a decimal.
10 Step 3Once you decide your relationship, multiply by the missing value.245 x = L
11 Put it all together! Change 245 milliliters to liters. 245 mL = ____L1 mL = L245 x = 0.245Check for Reasonableness:A milliliter is less than a liter. So, the number of liters should be less than the number of milliliters < 245, so the answer is reasonable.