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Counting-up
Subtraction Method With Money
- First, count up to
the nearest 10 cents.
- Next, count up to
the nearest $1.00.
- Next, count up to
the nearest multiple of $ 1.00
Example: What change must you return if you are handed $ 20.00 and the
bill is $ 12. 67 ?
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Write the smaller
number
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1
|
2
|
.
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6
|
7
|
|
|
|
|
+
|
.
|
0
|
3
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Count up to the
nearest .10
|
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Circle each count-up
number
|
1
|
2
|
.
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7
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0
|
|
|
(hi-lighted)
|
|
+
|
.
|
3
|
0
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Count up to the
nearest $ 1.00
|
|
|
1
|
3
|
.
|
0
|
0
|
|
|
|
+
|
7
|
.
|
0
|
0
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Count up to $ 20.00
|
|
|
2
|
0
|
.
|
0
|
0
|
|
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Add the numbers you
circled:
.03 + .30 + 7.00 = $
7.33
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|
|
|
|
|
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The change you give back is $ 7.33. As you take the change out of the
cash register, you say to the customer, “ $12.67
plus 3 cents is $12.70, plus 30 cents
is $ 13.00, plus 7 dollars is $20.00.”
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