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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
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2
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.
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6
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7
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|
|
|
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+
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.
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0
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3
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Count up to the
nearest .10
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Circle each count-up
number
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1
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2
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.
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7
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0
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|
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(hi-lighted)
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+
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.
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3
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0
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Count up to the
nearest $ 1.00
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|
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1
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3
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.
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0
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0
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|
|
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+
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7
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.
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0
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0
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Count up to $ 20.00
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|
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2
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0
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.
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0
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0
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Add the numbers you
circled:
.03 + .30 + 7.00 = $
7.33
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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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