The fraction may be simplified when the numerator and denominator have a common factor greater than one. Units are often referred to as ones. Eg, 4∙2 has 4 units and 2 tenths, or you could say 4∙2 has ...

Okay, to make a green dinosaur we use a ratio of 3:7. That’s three yellow dinosaurs for every seven blue. Smashing. To help think about this as a fraction, we need to take a look at them all together.