math (?)
posted by scooby9132002 .
Fractions equivalent to 4/10?
are 1/2 and 4/10 equivalent fractions?

No they are not.
1/2 = 5/10
Since 4/10 ≠ 5/10, they are not equivalent fractions. 
Fractions equivalent to 4/10 =
2/5
8/20
12/30
16/40
Do you see the pattern?
4/10 >> Divide both the numerator and denominator by 2 to get 2/5
4/10 >> Multiply the numerator and denomiator by 2 to get 8/20