Mass – How much matter is in an object Tool – Triple Beam Balance Units – Kilogram (2.205 pounds) Gram (1/1000 of a kilogram) Milligram (1/1000 of a gram)

Length - Distance Tool – Meter Stick Unit – Meter (3.281 Ft.) Centimeter (1/100 m) Millimeter (1/1000 m) Kilometer (1000 m) Light year (9.46 X 10¹⁵m)

Volume – How much space something takes up Of a liquid – Tool – Graduated Cylinder Unit – Liter (1000 mL)(1.057 quarts) Milliliter Of a regular-shaped solid – L X W X H(5th) Tool – Metric Ruler Unit – Cubic Centimeters Of an irregular-shaped solid – Tool – Graduated cylinder through the process of Water Displacement