The document discusses different units of measurement including volume, capacity, mass, and time. It provides examples of converting between different units by multiplying or dividing by factors of 1000, 1000000, 60, 24, 7, and 52. For volume, the key units are mm3, cm3, m3, and the document explains how to find the volume of prisms and objects with a cross-sectional area.
2. Volume
• Volume is the amount of matter that can fit
into a 3d object
• It is used for aquariums and pools and also
packaging
• You convert one unit to the other by
multiplying from m^3 to cm^3 multiply by
1000000 or the other way dividing by
1000000. Multiply 1000 from cm^3 to mm^3
and the other way divide by 1000
4. prisms
• To find the volume of prisms you multiply the
length times width times height
• To find the volume of a prism with a cross
section you find the area of the base then that
times the height
6. Capacity
• Capacity is the amount of water a 3d object
can hold
• We use capacity for fish bowls, aquariums,
and reservoirs
• You times 1000 to convert to lower unit and
divide by 1000 to convert to a higher unit
• 1ml is 1cm^3, 1000cm^3 is 1l, 1m^3 is 1kl
8. Mass
• Mass is the amount of matter it has
• We use mass for weight, for cooking and for
stars and planets
• You convert mass by multiplying and dividing
by 1000
10. Time
• To convert time you divide by 60 to get
seconds and minutes and to get hours you
divide by 24 then divide by 7 to get days and
by 52 to get weeks
• We use time ones because in one place the
sun will be setting and in other places the sun
will be rising
