It is always tough to remember what a big number can be divisible by. I know from experience. Once I learned these tricks it helped me so much. I hope they can help you too.
Divisibility by 0
Divisibility by zero is undefined. You can't get an answer from it you just gets nothing. For example, 1 divided by 0 is undefined. You just can't do it.
Divisible by 1
Everyone knows that one divided by something is always one. Right? Well, if you didn't now you know.
Divisible by 2
Divisibility by two is simple. All you have to do is see if the number ends with 0,2,4,6,or 8.
For example, 17,308 ends in an eight so you know it is divisible by 2. The answer will be 8,654.
Divisible by 3
Divisibility by three is a little tricky. So if the sum of the number is divisible by three then it can be divided by three. For example, if we had the number 405 then you would add the numbers together. 4+0+5=9 and 9 is divisible by three. Now you know that 405 can be divided by 3.
Divisible by 4
Divisibility by four has to do with the last two digits of a large number. So if the last two digits of a large number are divisible by four then you know that the number can be divided by four. For example, If you had 30,016 you know that the last two digits,16, is divisible by four.
Divisible by 5
Divisibility by five is the easiest of them all. If the number ends in 5 or 0 it is divisible by five. For example, 10 is divisible by five because it ends in zero.
Divisible by 6
To know if a number is divisible by six you have to know if it is divisible by 2 and by 3. So go back to the top to see how to be divide by 2 and 3. To show you how if we had the number 12 you know it is divisible by two because 12 ends in 2. Also, you know it is divisible by 3 because 2+1=3.
Divisible by 9
The divisibility rule for nine is the same as the rule for three. If the sum of a digit is a multiple of nine then you know it is divisible by nine. For example, 99 can be divided by 9 because 9+9=18 and 18 is a multiple of 9. So you can divide the number by nine.
Divisible by 10
Divisibility by ten is really easy. If the number ens in a zero it is divisible by ten. To show you, if you had the number 10000000000000000000000000000000000000000 you would know it is divisible by ten because it ends in zero.
Did you like it? Were you confused? Leave me a comment and tell me how you feel.
I love pi. It is so delicious and creamy. I could fall asleep counting pi.
"Hey April this is about math."
"Oh, sorry Bill"
Pi is one of the longest numbers of all. I can remember 3.1415637289 wait or was it 4.31571930. I cant remember.
"April its 3.141592 and so on."
Pi can help you find out the circumference of a circle. Also, it can help you find out the area of a circle. You get the point? Pi is helpful for a lot of things. While finding the area or circumference of a circle you use Pi which is 3.14. Pi goes on forever but for math we just use 3.14. It is easier to use 3.14 than a million numbers. Also, you are going to need to know that this is the symbol for pi, π.
Learning how to use pi is really easy. Today I am going to tell you how to use pi with circles. To use pi with a circle you need a circle with radius or diameter. Once you have it with the numbers the you are ready to go. we are going to be working on circumference. The circumference has to equations. One for radius and one for diameter. The equation for diameter is C=πd and the equation for radius is c=2rπ. In the picture we are doing radius. So the first step is you take the r, which equals 14, and multiply it times 2. You should get 28. After you have multiply by 2 then multiply by 3.14(pi). You will need a calculator for this. I got 87.92 and that is your answer. Don't forget to put what you unit which is miles. Now on to diameter. For diameter there would be a line all the way across the circle with a number above it. In this example the number will be 18. If the formula is c=πd than all you have to do is multiply pi with the diameter. So 18 times 3.14(pi) is 56.52. The unit was feet. The answer for diameter is 56.52 feet. That is how you do circumference with pi.
Math bust time
Can you memorize all the digit of pi?
It is impossible to memorize all the numbers of pi. The post memorized of pi is 70,000."The most decimal places of Pi memorized is 70,000, and was achieved by Rajveer Meena (India) at the VIT University, Vellore, India, on 21 March 2015. Rajveer wore a blindfold throughout the entire recall, which took nearly 10 hours," says
http://www.guinnessworldrecords.com. The most they have found of digits in pi is 2.7 trillion. That is is a lot of digits.
d= diameter symbol
Circumference-the distance around something, Most likely a circle
Area-the measurement of a surface
Radius- a straight line from the center of a circle
Diameter-a straight line passing from side to side through the center of a circle
If you need more help with pi go to https://www.khanacademy.org.
Did you like the blog post? Did you learn anything? Do you need help with math. Leave a comment and tell me.
P.S. Bill wanted me to tell you he helped too.
Hey, world! If you are reading this, then you are on a blog called Math busters. This is a fun and helpful blog that teaches math tips and tricks. Some of the blogs will be about busting math equations, help with learning math, and math tips.. Everyone loves math, right? Well, I totally love math. Even though a lot of people don't like math it is my favorite subject. These math tips will help you get through math and achieve your math goals.
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A happy person who loves doing math problems all day.