Dear Math Masters,

I always tell you to include units in your answer. You might think that’s just me being a typical teacher, but I do it because numbers always have context. When we use numbers in the real world, they tell a story, and the units is the good part of the story. Without them, we can’t be sure what our number means. Also, if we aren’t clear about our units, we could cause problems or make mistakes. And I don’t mean “miss a few points on your math test” mistakes. I mean “oh no, we won’t be able to destroy the meteorite before it crashes into the earth” mistakes.

So here are a few numbers that are important to us. I want you to see if you can match the numbers with their units.

27

107

7:40

2:45

9150

303

Sincerely,

Mr. Heimbuck