Chapter 8

Computing Using Math

IN THIS CHAPTER

check Using math operations

check Getting fancy with advanced operations

check Modding, ordering, and rounding numbers

check Coding a crypto code breaker

Math operations consist of everything from adding and multiplying to using exponents. This chapter helps you gain proficiency in working with math operations, coaching you in how you can use these computational tools in your computer programs. For example, your coder can write code that uses math to find the average of a group of test scores, or figure out whether a number is even or odd, or pick random numbers for a dice roll.

Acting Out Math, Unplugged

Math is something you use every day. You figure out how many quarts of paint you need to cover all four walls of your room. You divide dog bones to make sure each beagle and corgi gets his fair share. You compute a tip to reward the pizza delivery person for getting that large pepperoni to you fast and hot (see Figure 8-1). Speaking of fast and hot, fast is determined by a number — a relative quantity of time; and hot is determined by a temperature.

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