Math

September 2, 2023

Binary

Binary is a device-used format where there are only the numbers 0 and 1. Binary Numbers Binary numbers are a format of numbers used by computers and other tracking devices. They use these “numbers” and identify them. Binary numbers only contain 0 and 1, but nothing else. We see that 0 is literally 0, and 1 is also 1. However, binary doesn’t have “2”, and 1 is the biggest among 0 and 1, so we need to find the smallest number from combinations of 0 and 1 that is greater than “1”. We see that 2 is 10 in binary,...

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July 22, 2023

The Chicken & Rabbit Problem

The Chicken & Rabbit problem is a great math and logic question. Here is the question: There are some chickens and rabbits. The number of total legs is {number} and the total number of eyes is {number}. How many chickens/rabbits are there? There are also many different ways to express this: There are some {first thing} and {second thing} The number of total {first part of thing} is {first number} and the total number of {second part of thing} is {second number}. How many chickens/rabbits are there? For instance, you can sub first thing for motorcycles and second thing for...

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May 7, 2023

How To Solve Two Variable Equations

There are a lot of situations where we find ourselves with two-variable equations, but it does seem frustrating trying to solve them. Here’s an example (where the answer is rounded to nearest integer): x + 3y = 7 5x – 2y = 1 There are two methods for solving this equation. Method 1: x + 3y = 7 5x – 2y = 1 We can first isolate a variable using one of the statements. You can pick any equation(such as eq. 1). x + 3y = 7 pick a variable(such as x) x + 3y = 7 x = 8...

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May 14, 2021

Estimation

Estimation is the process of finding an estimate, and that is usable in many ways. The value is usable because it is guessed from the best information he/she has. For example, you want to know the number of atoms a plastic bag has. The information you have is: Atoms are very small. That means the bag must have tons of atoms. So, a pretty good guess for a starter is 10,000,000,000,000 atoms. Another example is that you want to know how many pages a fairy tale has. Your information is: Paper is extremely thin, and the book is about a...

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May 6, 2021

Measurement

Measurement means the process of measuring stuff.  You can measure to engineering, construction, and to almost all everyday objects. One way to measure things is by using a meterstick. Or ruler. Or even measure tape! If you like, you could measure the following objects in length and height: A leaf A book A mug A book A lamp A leaf in your backyard A mug A water bottle A pen A toothbrush A pair of shorts A raincoat A towel

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