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guest
· 7 years ago
· FIRST
How do you know?
1
tony007
· 7 years ago
How do I know 20 is less than 40? How am I supposed to prove this? It's common sense, what are they expecting the kids to write?
19
i_
· 7 years ago
By following the continuity of the number line (which has an implicit order) it can be deduced that the value of 20 is closer to zero than that of 40, implying that 20 is less than 40.
8
theflyingtrooper
· 7 years ago
Nice teacher
1
silvermyth
· 7 years ago
I a'm
16
rosemagwin
· 7 years ago
When your gra'mmar is on point
4
