Rational Numbers
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A rational number is any number writable as a fraction of two integers with a nonzero denominator; its decimal form ends or repeats.
Show
3/4 ends at 0.75; 1/3 repeats as 0.333…; the integer 7 qualifies as 7/1.
Watch for
Every integer is rational; the reverse fails.
Builds on
- Nothing — this is a starting point.
Unlocks
- Nothing yet depends on this.