Happy Monday!
Today we are dividing number with decimals. We will NOT be getting remainders on tonight's homework. Let's take a look at 1c.
2.4 divided by 8.
The first number is ALWAYS the whole. This means it will be on the inside of our standard
division problem.
Our first step is to bring up the decimal. Do not forget that it exists!!!
Now, you work the problem as if it is any normal division problem.
Does 8 go into 2? No. Does 8 go into 24? Yes, 3 times. Our answer then is .3
Okay now take a look at 1d.
2.4 divided by 80
I can see that this problem is very similar to 1c.
We know that 80 is the same as 8 x 10. So we could change our problem to
2.4 divided by 8 divided by 10. If you can tell, 2.4 divded by 8 is the same problem as 1c. This equaled .3
Now we can take the .3 and divide by 10 which equals .03.
You could do the standard algorithm on both problems if you wanted!
Good luck on homework and I can't wait to see you all tomorrow!
Mrs. C
Monday, December 8, 2014
Monday, December 1, 2014
Monday December 1st
Hello everyone!!!
I hope you all had a wonderful Thanksgiving. Jumping into the week, we are continuing with division. I have been having some serious issues posting on my blog because my iPAD is being difficult. I am running an update, so hopefully it will get rid of the problems!
We go through three steps when we have a division problem.
1. Estimate
2. Solve
3. Check
On number 1b, you can see that we are dividing 37 from 158. 37 is the divisor and 158 is the whole. Let's go through our steps to solve this problem!!
1. Estimate:
I am going to start by rounding 37 to 40. I then think about the multiples of 4 or 40. I do this to find a number I know 40 will go into evenly. I know that 4 goes into 16, so I am going to round 158 to 160. 160 divded by 40 equals 4. This is my starting point.
2. Solve
I will start by setting up my division problem. Does 37 go into 1? No. Does 37 go into 15? No. Does 37 go into 158? Yes, but I am unsure of how many times. However, I am going to start with 4 because that was my estimated quotient.
Now, multiply 37 x 4. This equals 148. Now I plug this number into my division problem and subtract to get a remainder of 10.
3. Check
I multiply my divisor 37, by 4 which equals 148, then I add my remainder which is 10 to get 158. This proves that our answer is correct! Yay!
When it comes to solving the story problems, it is all about re-reading the problem, and breaking it up.
Mrs. C
I hope you all had a wonderful Thanksgiving. Jumping into the week, we are continuing with division. I have been having some serious issues posting on my blog because my iPAD is being difficult. I am running an update, so hopefully it will get rid of the problems!
We go through three steps when we have a division problem.
1. Estimate
2. Solve
3. Check
On number 1b, you can see that we are dividing 37 from 158. 37 is the divisor and 158 is the whole. Let's go through our steps to solve this problem!!
1. Estimate:
I am going to start by rounding 37 to 40. I then think about the multiples of 4 or 40. I do this to find a number I know 40 will go into evenly. I know that 4 goes into 16, so I am going to round 158 to 160. 160 divded by 40 equals 4. This is my starting point.
2. Solve
I will start by setting up my division problem. Does 37 go into 1? No. Does 37 go into 15? No. Does 37 go into 158? Yes, but I am unsure of how many times. However, I am going to start with 4 because that was my estimated quotient.
Now, multiply 37 x 4. This equals 148. Now I plug this number into my division problem and subtract to get a remainder of 10.
3. Check
I multiply my divisor 37, by 4 which equals 148, then I add my remainder which is 10 to get 158. This proves that our answer is correct! Yay!
When it comes to solving the story problems, it is all about re-reading the problem, and breaking it up.
Mrs. C
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