This week in math we learned about polynomials. We learned how to simplify them and expand them. When you simplify, you combine like terms. basically any terms that are the same, you either add or subtract it. When expanding, you take the number outside of the bracket and multiply it by every term inside the brackets.
This week in math I learned how to find an angle in a right angle triangle using trigonometry. When finding an angle, you need to first label the triangle with the hypotenuse, opposite, and adjacent sides. you then use the two sides that have a measurement and find which sign you need using Soh Cah Toa. For example, if the sign you are using is Cosine, then your formula would be Cos times x equals Adjacent divided by Hypotenuse. You then need to get the “x” by itself using a reverse sign button on your calculator which is the sign to the power of negative one. Your equation would be x equals cosine to the power of negative one times (adjacent divided by hypotenuse).
This week i learned about the basics of Sine, Cosine, and tangent. When you’re trying to find an angle of a right angle triangle you can use these three things to find it. They are related to the hypotenuse, adjacent, and the opposite sides of a triangle. 
The hypotenuse can be found by going across from the right angle of the triangle. the adjacent is the side that is right beside the angle, and the opposite is across.
This week I learned about scientific notation. Scientific notation is used when writing big numbers or small numbers. These numbers usually take to long t0 write down, so a formula is used to make it easier. This formula is a number multiplied by 10 to the power of how many zeros you want to add. If your number is a decimal, then you can use a negative exponent to find how many zeros you need. When writing scientific notation, you have to remember to keep your number with only one digit in the ones place and the rest in the decimal spot. If you are trying to find the distance to the moon, It would be 384,400 Km. But in scientific notation, it would be 3.844 times 10 to the power of 2.
This week I learned how to do a division table to find the prime numbers/ factors of a certain number. This table is a good way to also find the Lowest common multiple, and the greatest common factor of two different numbers. You start the table with the number you are using and put it in a box. beside the box you find the lowest prime number you can divide your number with, and write it on the left of the box. Next you divide the number with the prime number and write the quotient under the starting number in another box. you continue finding the lowest prime number divisible until you end up with your final prime number. using the prime numbers you have on the left side, you can easily find the LCM and GCF.
A time i used math in real life is during cooking. when measuring out ingredients, some recipes are in different metric systems. this means you have to use math to convert for example ml to oz. You also need to convert the temperature of the required Celsius/ Fahrenheit. During baking, a lot of math is required. 
photo from: https://www.pexels.com/photo/baking-tools-on-the-white-wooden-table-6996329/