Answer:
product of 12 and a number, 12 groups of a number, a number multiplied by 12
21.25-5=16.25
16.25÷6.50=2.5
She will have to babysit 2.5 hours
Answer:
the counting numbers and zero are whole numbers.
the counting numbers and their opposites, along with zero, are integers.
integers and decimal equivalents of fractions are rational numbers.