The hardest thing I learned in math was when we were doing the Pythagorean Theorem. I felt like I had no idea what to do, since I didn't learn it in 6th grade, unlike other schools. I had to figure out how to find one of the ends of the sides, and at first I was like, "Oh this is easy! No problem," but then, when I actually started it, I soon became thoughtless. I had no idea how to start, and I didn't know the formula. Finally, my table partner finally helped me understand. All I had to do was to multiply the sides by the exponent "2", add it up, and then see whether it was equal or not. I finally knew how to do it, and I finally understood it.
In conclusion, the hardest thing I learned in math was the Pythagorean Theorem, however, thanks to my table partner, I finally knew how to solve it and finally understood it. The Pythagorean Theorem doesn't scare me anymore like it used to, because now I can solve it with ease.
So as we all know, subjects or elements can be connected to each other for good use. Today, we are going to talk about how math and science connect. Simply, we're going to talk about how they help each other or what they have in common.
First of all, science uses math to help their ideas. They use it to measure how much they need, or how much is needed for the experiment to work. For example, in BrainPop, Tim and Moby were measuring about how much water is needed for a plant. They tested the plant by giving them a variety amount of water. As the weeks passed, they determined how much the plant needed water, and then, you could convert how much water is needed.
In conclusion, science and math connect because math can be used for science because math helps measure how much of the material they use or need for an experiment.
So, all of us should know what negative numbers are. However, if you don't know what they are, negative numbers are the opposite of positive numbers. They also come from the other side of zero, and they go down lower and lower. By that, I meant that as the number gets bigger, the quality or value gets lower. -1 would be the greatest amount, and -100 would be the smallest amount.
How would we use negatives in real life? Well, for zooming in and out with a camera or a microscope could help. Also, I heard that it helps the spacing with typography. It could basically help measure the distance of something, or some sort like that. However, it doesn't help ALL distances. Negative numbers could mostly help with math or measuring. For measuring, I would usually think of using negative numbers for the weather or something. For an example, imagine a scientist measuring the ocean. "It is about -45 degrees," he would say. Negatives can help with the temperature, besides math. You would be surprised at how many math related things are being use
So on last weeks blog, we talked about turning fractions into decimals. Well this week, we are going to turn decimals into fractions, in two ways actually.
So first of all, one way which I prefer is making the place values the bottom number, and the number of the place value the top number. For example, let's use 0.34. The top number is going to be 34, because it's the number of the place value. The place value will be 100, because the place values on the decimal side is the opposite of the left side of the decimal. 3 is in the tens place, and 4 is in the hundreds place, which makes the fraction 34/100. Now you just simplify the fraction and there you have it. A decimal that is turned into a fraction.
Another way of turning a decimal into a fraction is just move the decimal over the two values to the right, and then just put the number over 100. For example, let's use 0.34 again. Move the decimal to spaces to the right, which is 34. Now put it over 100, since it's in the hundredths place value, which would be 34/100. Then you just simplify the fraction and that would be your answer. I would choose this method because it is an easier and quick
So today's blog topic is a really easy topic today. We're going to explain on how to turn fractions into decimals. Turning fractions into decimals isn't really that hard. You just need to divide the top number with the denominator.
Here's an example: let's turn 5/9 into a decimal. So all we have to do is divide 5 by 9. 9 can't go into 5 at all, except 0, so 0 is going to be the answer. Then, you have to add a decimal and a 0 at the end, because you need a decimal after all. Now, pretend that the decimal isn't there anymore, and that the number 5 turns into a 50. 9 can go into 50 five times, since 5x9=45. So subtract 50-45, which equals 5. So your answer should be 0.5. That is how you convert a fraction into a decimal.
Which would be better to use in planning purchases of a restaurant? Ratio or Percentage? Truthfully, my answer would be percentage. I think it works best because percentages help you figure it out in your head. For example, I have $30.00 and I go to a small restaurant. I order a dish that costs about 20% of the $30.00 I have. What would the answer be? Well to me, I would multiply $30.00 • 20%. Don't forget to turn 20% into a decimal. Then you just multiply, and your answer should be 6.0000, which means that the entree costs 6 dollars.
Even though I picked percents, this does not mean that ratios are worth less. Ratios and percentages are quite similar to another, but they also have their own differences. They are different forms of fractions, but they also have their own steps to follow. Of course, everyone has their o
So today's blog is simply showing you how to solve 2x-7=15. Now this question isn't that hard, because it is very basic and hopefully you will follow along perfectly.
Now the first step is to add. How do we add this since there aren't any places to add? Simple. Just add 7 to 15 and 7 itself. So basically, it is 7+7 and 15+7. Now, you do not add 7+7 because if you look at the problem, the original 7 is subtracted, which means that the original 7 is actually a negative 7 (-7). So if you add -7+7, it just equals
zero, so cross it out. Now you just need to add 15+7, which is 32. Your problem should now look like this: 2x=32. All you have to do now is just divide 32 by 2, which is pretty easy. 32 divided by 2 is 16, which is now your answer.
These multi-step equations are really easy, and they are not that hard to do. You just have to watch out for the operations. The key step is to just remember what is the opposite of the operation, and if you follow that it won't be hard.
Pi is a mathematical version of 3.14. The official celebration of Pi is on March 14. It's funny because 3.14 is sort of like 3/14, the numerical version of March 14. Anyways, there are little information that I know of Pi, however, that's better than nothing at all.
There are many things that Pi does, especially in math. Those who don't know what Pi is, usually mistaken it for "pie." However, that's getting off topic. Anyways, Pi can be used in finding the radius of a circle. They usually multiply the number by Pi. Ever since I entered middle school, Mr. Dorman has been REALLY excited about it. He's been testing kids on saying how many digits they remembered, and it's really hard since there's more than 100 numbers.
Pi is a very important thing in the math system of today. Sure, it may be used just for circles, but it can be used for other things too. We just don't know how yet.
So lately in math we've been learning about slopes. The formula of slope is y=mx+b. The way to solve this, is to remember that m=slope, and slope is rise over run (rise/run).
First of all, we need to know what the slope is. In this case, we are going to use y=7/4x + -8. First, you have to have a four quadrant graph. Look for -8 on the graph, and mark it. Then, use the rise, which is 7. Since it's not a negative, you go up 7 units. Then when you're done, you go right 4 times, since it's not a negative. Remember, if it's negative, then it goes the opposite direction.
Slopes and hills are actually easy, as long as you follow directions and do it the right way. Remember, the effort may seem meaningless now, but it will pay off in the future.
Equations are not that hard at all. It all depends on the question or problem. You can create your own equation for anything, like y=x-7. Of course, the majority of equations are mostly used for school.
What are some questions you can use for equations? Well, there are many of them actually. However, let's ask ourselves our own questions. The equation for now is y=6x. If you get 6 dollars as an allowance for one week, how much time will it take to save up for 18 dollars? Now let's see. The "x" stands for week. So we should substitute a number for each week. Since you get 6 dollars per week, it would be 6x1. What happens if it's 2 weeks? If you multiply 6 by 2, then it would be 12. Keep going until you get to the number you're looking for. There are many questions and answers the world might ask just for this equation, so you should do your best and prepare for that.