Numeracy Worksheet - Castlebrae Community High School - 2012 Page 8
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47FHS Numeracy
Subtraction
contents page
Written Method (
We do NOT “borrow and pay back”)
We use decomposition (borrowing) as a written method for
subtraction (see below). Alternative methods may be used for
mental calculations.
Example 2
4590 – 386
Example 3
Subtract 692 from 14597
Level 2
8 1
3 1
4590
14597
- 386
- 692
4204
13905
Example 4
Find the difference between 327 and 5000
Level 2
9 1
9
4
1
1
5 0 0 0
We need to “BUMP” our borrow 1 back to the end.
- 3 2 7
4 6 7 3
When subtracting decimals we make sure all the decimal points
are lined up.
Example 5 Subtract 8.36 from 20.9
Level 2
1 1
8 1
20 . 90
20.9 can be written as 20.90
- 8 . 36
1 2 . 54
Remember you can only have TWO numbers in a single
subtraction calculation.
8
L Watson 2012
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education