Children with ADHD (attention deficit hyperactivity disorder) can be hyperactive which can make it difficult to get to sleep. Bedtime can also be chaotic and stressful for parents.
Rational Numbers 5/1, 1/2, 1.75, -97/3 ... A rational number is any number that can be written as a ratio of two integers (hence the name!). In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers.
Ratio & Proportion. Ratio The ratio of two numbers a and b is the fraction, usually expressed in reduced form. An alternative form involves a colon. The colon form is most frequently used when comparing three or more numbers to each other.