Q1.
Are 3⁄6, 4⁄8, 5⁄10 equivalent fractions? Why?
Answer
Yes — all three are just other names for one half.
3/6 = (3 ÷ 3)/(6 ÷ 3) = 1/2
4/8 = (4 ÷ 4)/(8 ÷ 4) = 1/2
5/10 = (5 ÷ 5)/(10 ÷ 5) = 1/2
4/8 = (4 ÷ 4)/(8 ÷ 4) = 1/2
5/10 = (5 ÷ 5)/(10 ÷ 5) = 1/2
On the fraction wall their shaded lengths end at exactly the same line, so they denote the same length in different fractional units.
The pattern: in each one the numerator is exactly half the denominator, so half the strip is shaded.