Cadmium Subtraction Method for the Active Albedo Neutron ...
Subtraction Using an Expanded Method (part 3 of 5)
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Transcript of Subtraction Using an Expanded Method (part 3 of 5)
![Page 1: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/1.jpg)
Subtraction Of Whole Numbers Using An Expanded Method
(the last step towards using a standard written method for subtraction)
For more maths help & free games related to this, visit: www.makemymathsbetter.com
Part 3 of 5: Subtraction with adjustment from the tens.
![Page 2: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/2.jpg)
Subtraction Of Whole Numbers Using An Expanded Method
(the last step towards using a standard written method for subtraction)
For more maths help & free games related to this, visit: www.makemymathsbetter.com
Part 3 of 5: Subtraction with adjustment from the tens.It is important that you have already viewed and understood parts 1 & 2
before you go any further.
![Page 3: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/3.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229
400
200
70
20
5
9_
![Page 4: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/4.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units.
400
200
70
20
5
9_
![Page 5: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/5.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.
400
200
70
20
5
9_
60
![Page 6: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/6.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
400
200
70
20
5
9_
60 15
![Page 7: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/7.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
400
200
70
20
5
9_
60The calculation can then be carried out:
15
![Page 8: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/8.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
400
200
70
20
5
9_
6
60 15
Firstly, subtract the units.
![Page 9: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/9.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
400
200
70
20
5
9_
640
60 15
Followed by the tens
![Page 10: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/10.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
400
200
70
20
5
9_
640200
60
And finishing with the hundreds:
15
![Page 11: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/11.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
400
200
70
20
5
9_
640200 + + = 246
60 15
The 3 answers are then added together to give the final answer
![Page 12: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/12.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
When this can be performed confidently, it can be simplified to a standard written method:
400
200
70
20
5
9_
640200 + + = 246
60
4 7 5
2 2 9_
15
![Page 13: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/13.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
When this can be performed confidently, it can be simplified to a standard written method:
400
200
70
20
5
9_
640200 + + = 246
60
4 7 5
2 2 9_
6
15
Firstly, an adjustment is made from the tens
![Page 14: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/14.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
When this can be performed confidently, it can be simplified to a standard written method:
400
200
70
20
5
9_
640200 + + = 246
60
4 7 5
2 2 9_
156
15
Firstly, an adjustment is made from the tens to the units
![Page 15: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/15.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
When this can be performed confidently, it can be simplified to a standard written method:
400
200
70
20
5
9_
640200 + + = 246
60
4 7 5
2 2 9_
6
156
15
Then subtract the units
![Page 16: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/16.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
When this can be performed confidently, it can be simplified to a standard written method:
400
200
70
20
5
9_
640200 + + = 246
60
4 7 5
2 2 9_
4 6
156
15
Followed by the tens
![Page 17: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/17.jpg)
When subtracting, there will be times when the units in the bigger number are smaller than the units in the smaller number, e.g. 475 – 229When this happens, an adjustment is made from the tens to the units. A ten is effectively taken from the tens column.And added to the units column.
When this can be performed confidently, it can be simplified to a standard written method:
400
200
70
20
5
9_
640200 + + = 246
60
4 7 5
2 2 9_
2 4 6
156
15
And finally the hundreds
![Page 18: Subtraction Using an Expanded Method (part 3 of 5)](https://reader035.fdocuments.net/reader035/viewer/2022062406/55895cd1d8b42a5e3f8b45cb/html5/thumbnails/18.jpg)
That’s it for now......
For more help with your maths, try my book:
mastering multiplication tableson amazon.com