Long long ago people used to use their

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Long, long ago, people used to use their own body parts to measure objects.

Long, long ago, people used to use their own body parts to measure objects. But there were problems. People created a new system that was based on something reliable. Something universal. Something logical. Something never-changing. 10 North Pole Equator The Earth! They took the distance from the North Pole to the equator and divided it by We know this unit as 1 meter.

1 mm 1 cm 1 dm Each unit is 10 times bigger than the

1 mm 1 cm 1 dm Each unit is 10 times bigger than the previous unit. 10 TEN x 10 x 10 1 kilometer= 10 hectometers= 100 dekameters= 1000 decimeters= 10, 000 centimeters= 100, 000 milliliters

Kilometer 1000 (Thousand) Hectometer 100 (Hundred) Decameter 10 (Ten) Unit 1 (One) Decimeter. 1

Kilometer 1000 (Thousand) Hectometer 100 (Hundred) Decameter 10 (Ten) Unit 1 (One) Decimeter. 1 (Tenth) Centimeter. 01 (Hundredth) Millimeter. 001 (Thousandth)

Kilometer 1000 (Thousand) Hectometer 100 (Hundred) Decameter 10 (Ten) Unit 1 (One) Decimeter. 1

Kilometer 1000 (Thousand) Hectometer 100 (Hundred) Decameter 10 (Ten) Unit 1 (One) Decimeter. 1 (Tenth) Centimeter. 01 (Hundredth) Millimeter. 001 (Thousandth)

Kiloliter 1000 (Thousand) Hectoliter 100 (Hundred) Decaliter 10 (Ten) Unit 1 (One) Deciliter. 1

Kiloliter 1000 (Thousand) Hectoliter 100 (Hundred) Decaliter 10 (Ten) Unit 1 (One) Deciliter. 1 (Tenth) Centiliter. 01 (Hundredth) Milliliter. 001 (Thousandth)

Kiloliter 1000 (Thousand) Hectoliter 100 (Hundred) Decaliter 10 (Ten) Unit 1 (One) Deciliter. 1

Kiloliter 1000 (Thousand) Hectoliter 100 (Hundred) Decaliter 10 (Ten) Unit 1 (One) Deciliter. 1 (Tenth) Centiliter. 01 (Hundredth) Milliliter. 001 (Thousandth)

Kilogram 1000 (Thousand) Hectogram 100 (Hundred) Decagram 10 (Ten) Unit 1 (One) Decigram. 1

Kilogram 1000 (Thousand) Hectogram 100 (Hundred) Decagram 10 (Ten) Unit 1 (One) Decigram. 1 (Tenth) Centigram. 01 (Hundredth) Milligram. 001 (Thousandth)

Kilogram 1000 (Thousand) Hectogram 100 (Hundred) Decagram 10 (Ten) Unit 1 (One) Decigram. 1

Kilogram 1000 (Thousand) Hectogram 100 (Hundred) Decagram 10 (Ten) Unit 1 (One) Decigram. 1 (Tenth) Centigram. 01 (Hundredth) Milligram. 001 (Thousandth)

Length A cubic centimeter (cmᵌ) is 1 cm x 1 cm 1 g 1

Length A cubic centimeter (cmᵌ) is 1 cm x 1 cm 1 g 1 cmᵌ = 1 g (water) Mass 1000 cmᵌ 1 ml Volume 1 kg = 1000 ml (water) 1000 cubic centimeters = 1 liter

1 Spot to the right To convert to a smaller unit, move the decimal

1 Spot to the right To convert to a smaller unit, move the decimal point to the right or multiply by 10 s. Kilo 1000 (Thousand) 2 Spots to the right Hecto 100 (Hundred) Deca 10 (Ten) Unit 1 (One) To convert to a larger unit, move the decimal point to the left or divide by 10 s. Deci . 1 (Tenth) Centi . 01 (Hundredth) Milli . 001 (Thousandth) Why an Elephant? Because an elephant footprint looks like a zero! For Example… There are ______ centimeters in 3 meters. Answer: 30 0 Elephant 1 Spot Footprints! to the right 2 Spots to the right (zeros)

Example 1 Spot to the right Kilo 1000 (Thousand) 2 Spots to the right

Example 1 Spot to the right Kilo 1000 (Thousand) 2 Spots to the right Hecto 100 (Hundred) Deca 10 (Ten) Unit 1 (One) Deci . 1 (Tenth) Centi . 01 (Hundredth) Milli . 001 (Thousandth) There are ______ millimeters in 1. 5 decimeters. Answer: 1 5 0 1 Spot to the right 2 Spots to the right

Example 1 Spot to the left Kilo 1000 (Thousand) 2 Spots to the left

Example 1 Spot to the left Kilo 1000 (Thousand) 2 Spots to the left Hecto 100 (Hundred) Deca 10 (Ten) Unit 1 (One) Deci . 1 (Tenth) Centi . 01 (Hundredth) Milli . 001 (Thousandth) There are ______ kilometers in 2. 8 decameters. Answer: 0 2 8 1 Spot to the left 2 Spots to the left

Example 1 Spot to the left Kilo 1000 (Thousand) 2 Spots to the left

Example 1 Spot to the left Kilo 1000 (Thousand) 2 Spots to the left Hecto 100 (Hundred) Deca 10 (Ten) Unit 1 (One) Deci . 1 (Tenth) Centi . 01 (Hundredth) Milli . 001 (Thousandth) There are ______ hectometers in 7. 5 meters. Answer: 0 7 5 1 Spot to the left 2 Spots to the left