My learning goal
Today in class we chose our learning goals. We had to chose reading goals, writing goals and maths goals. My maths goals is very interesting and that is what I'm going to talk to you about today.
My maths goal is to add and subtract four digit numbers like 3999+1876 but in column format (Algorithm):
1
3999
1. + 1879
8
First, I add the ones and if it is 10 or more I will add the one on top of the tens. E.g. 9+9=18 so I write 8 and add the 1 on top of the tens.
11
3999
2. + 1879
78
Second, I add the tens and again, if there is 10 or more I will add the one on top of the hundreds. E.g. 9+7+1=17 so I write 7 and add the 1 on top of the hundreds.
111
3999
3. + 1879
878
Third, I add the hundreds and once again, if there is 10 or more I will add the one on top of the thousands. E.g. 9+8+1=18 so I write the 8 and add the 1 on top of the thousands.
111
3999
4. + 1879
5878
Fourth and final, I add all the thousands together to get 5 (3+1+1) and put that in front of the 8. If you did it right you would get 5878!