Use 'and a half' for precise measurement, adding extra half to the whole number. I need an hour and a half to finish this.
Pro Tip 2/3
Common Phrases
Often found in age or time expressions, suggesting it's frequently about duration or growth. He waited a year and a half for a reply.
Pro Tip 3/3
Not Always Literal
Sometimes used to emphasize the considerable size, length, or number, rather than exact measure. We walked for miles, it felt like ten miles and a half!