Presentation on theme: "Meters, Grams and Liters"— Presentation transcript:
1 Meters, Grams and Liters The Metric SystemMeters, Grams and Liters
2 The Metric SystemThe metric system is a measurement system based on our decimal (base 10) number system.Other countries and all scientists and engineers use the metric system for measurement.
3 Metric Prefixes Prefix Symbol Factor Number Factor Word Kilo- k 1000 Metric UnitsThe metric system has prefix modifiers that are multiples of 10.PrefixSymbolFactor NumberFactor WordKilo-k1000ThousandHecto-h100HundredDeca-da or dk10TenUnitm, l, or g1OneDeci-d.1TenthCenti-c.01HundredthMilli-m.001thousandth
4 Meters Meters measure length or distance One millimeter is about the thickness of a dime.
5 Meters One centimeter is about the width of a large paper clip or your fingernail.
7 Meters A kilometer is about six city blocks or 10 football fields. 1.6 kilometers is about 1 mile
8 GramGrams are used to measure mass or the weight of an object.
9 GramsA milligram weighs about as much as a grain of salt.
10 Grams 1 gram weighs about as much as a small paper clip. 1 kilogram weighs about as much as 6 apples or 2 pounds.
11 LitersLiters measure liquids or capacity.2 Liter Soda
12 Liter1 milliliter is about the amount of one drop
13 Liter1 liter is half of a 2 liter bottle of Coke or other soda
14 What unit would youuse to measure each ofthe following items?
15 Which unit would you use to measure the length of this bicycle? km m cm mm
16 Which unit would you use to measure the mass of a penny? km g cL mg
17 Which unit would you use to measure the water in an aquarium? L m cL mg
18 Which unit would you use to measure the mass of a feather? L m cL mg
19 Which unit would you use to measure the mass of a student desk? kg g cL mg
20 Which unit would you use to measure the mass of a whole watermelon? kg g cL mg
21 Which unit would you use to measure the mass of an egg? kg g mm mg
22 Which unit would you use to measure a can of soup? kL L mm mL
23 Which unit would you use to measure this glass of milk? kL L cL mL
24 Which unit would you use to measure the distance across Kansas? km m cm mL
25 Which unit would you use to measure the height of a tree? km m cm mm
26 Which unit would you use to measure the length of a bracelet? km m cm mm
27 Changing Metric UnitsTo change from one unit to another in the metric system you simply multiply or divide by a power of 10.
28 Place Values of Metric Prefixes Move the decimal point to the right to multiply.Move the decimal point to the left to divide.
29 Commonly used Metric Units of Length, Mass and Volume Length mm cm m km (small) (big) Mass Mg g kg (small) (Big) Volume mL L (small) (Big)
30 To change from a larger unit to a smaller unit, you need to multiply. km m (x 1000)1000 m = 1 kmm cm (x 100)100 cm = 1 mcm mm (x 10)10 mm = 1 cmLengthExample-15 km = ____m15 x 1000 = 15,000 m
31 Mass g mg (x 1000) 1,000 mg = 1kg kg g (x 1000) 1,000 g = 1kg Example- 9 g = ____ mg 9 x 1000 = 9,000 mg
32 Volume L mL (x 1000) 1,000 mL = 1 L Example- 60 L = ___ mL 60 x 1000 = 60,000 mL
33 To change from smaller units to larger units you divide by a power of ten. LengthExample-50 cm = ____ m50 ÷ 100 = .5 m75 mm = ___ cm75 ÷ 10 = 7.5 cmmm cm (÷ 10)10 mm = 1 cmcm m (÷ 100)100 cm = 1mm km (÷ 1000)1,000 m = 1km
34 Mass mg g (÷ 1000) 1,000 mg = 1kg g kg (÷ 1000) 1,000 g = 1kg Example- 600 mg = ____ g 600 ÷ 1000 = .6 g
35 Volume mL L (÷ 1000) 1,000 mL = 1 L Example- 500 mL = ____ L 500 ÷ 1000 = .5 L
36 Setting up a Proportion or Conversion Ratio 60 cm = ____ m-Write your conversion factor100 cm = 1 m-Set up your proportion/conversion ratio60 cm X-Cross multiply and solve for X X = 60100 cm = 1 m60 cm X X = .6 m