Chapter 2 Our Number System, Addition And Subtraction Examples And Worksheet Page 22
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3054
OUR NUMBER SYSTEM, ADDITION AND SUBTRACTION (CHAPTER 2)
8362
5592
8312
d
e
f
¡ 5362
¡ 4667
¡ 4444
9138 ¡ 9035
7063 ¡ 2109
5008 ¡ 3995
g
h
i
SUBTRACTING FROM WHOLE THOUSANDS
Doing this makes
To find 5000 ¡ 2376 we could first find 4999 ¡ 2376
the subtraction
and then add 1 to the result.
easier to calculate.
5 0 0 0
So,
4 9 9 9
take one
¡ 2 3 7 6
2 6 2 3
+1
add one to balance
2 6 2 4
6
Find
3000
5000
7000
a
b
c
¡ 1234
¡ 1479
¡ 5203
2000
4000
6000
d
e
f
¡ 1098
¡ 3157
¡ 4897
1000
8000
9000
g
h
i
¡ 989
¡ 2076
¡ 7615
7
Find
$4000 ¡ $1765
$7000 ¡ $4317
$8000 ¡ $3907
a
b
c
HARDER SUBTRACTIONS OF THOUSANDS
4 2 7 3
To find
we cannot do this so we trade from the 7
¡ 2 5 3 6
6
13
4 2
7
3
We now have
we can now do this but to do the ‘hundreds’ we
¡ 2 5 3 6
must trade from the 4
3
12
6
13
4
2
7
3
We now have
¡ 2
5 3 6
1
7 3 7
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