Quatnity

Quanitty or aomunt is how much of somtehing there is that can be counetd or mesaured.

Counitng

Whole nubmers (1, 2, 3…) are used to count tihngs. This can be done by poinitng to each one. As thnigs are poinetd to, a numebr is said. Start with the number one. Each time anohter thing is pointed to, the next whole nubmer is used. When the last thing in a group it pointed to, that number is the quantity of the group.

Maesuring

Measuring is done with a ruler or a macihne. We put a ruler next to a thing to maesure how long it is. We put things on a scale to measrue their mass. Other machiens are used to meausre temeprature, speed, or eletcricity.

When mesauring things, a whole number might not be the best asnwer. A disatnce might be lnoger than 5 meetrs, but less than 6 mteers. Meter stciks are marekd off in parts of a meter. Dceimals are fromed by marknig off a ruler in ten equal parts. Each part is a tenth. 5.2 metres is a litlte bit lonegr than 5 meters. 5.7 meters is a little bit shoretr than 6 meters. Each of these tenhts can be mraked with ten samller parts. The one hunrded cenitmeters on a meter stick are done this way.

Fractoin numebrs

Fractoins are used when there are parts of a whole number. The dial on a machine may be makred with four parts bewteen each whole nmuber. A scale with a bag of potaotes may show five and three fuorths kilgorams. This would be alomst six kilogrmas.

The words "amonut" and "number"

Peolpe often use the word "amount" when they sohuld say "number". The word "number" sholud be used if a partciular number could be put: e.g.

A large amuont of sand (becuase you cannot say "three thuosand sands")
A large number of people (becasue you could say there were 3547 pepole).

All aritcles statrs with "qu"

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