Exercise 7 and 8 are on page 5.
How do you pronounce that sentence?
Exercise seven and eight are on page five.
or
The seventh and eighth exercise are on the fifth page.
Or are both versions possible?
Exercise 7 and 8 are on page 5.
How do you pronounce that sentence?
Exercise seven and eight are on page five.
or
The seventh and eighth exercise are on the fifth page.
Or are both versions possible?
Your sentence is pronounced exactly as written.
My guess is this question arises from dates like "March 1" being pronounced "March first" when read aloud, rather than "March one".
Dates are special in this way. In English, dates and numbers after people's names (William Henry Gates III) or titles (Pope Gregory XIII) are the only cardinal numbers in written form which are pronounced like ordinals when read aloud.