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chapter3.3b
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1993-09-22
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à 3.3è Subtracting Decimal Numbers.
äè Please Subtract the following Decimal Numbers.
â
#êêïSubtractêïæïîò îì
#êêêêï2ï╝ . ╢ï╕ î4
êêêë-ë 5 . 4ï5ï7
#êêêêï──────────────
êêêêï2ï1 . 6ï7ï7
éS To subtract the Decimal Number 5.457 from 27.134, it is
first necessary to write the numbers in a column with the decimal points
lined up vertically.
êêêêè2 7 . 1 3 4
êêêê-è 5 . 4 5 7
#êêêêè───────────
Next you should subtract the columns as you would whole numbers.
#êêêêë æïîò îì
#êêêêè2ï╝ . ╢ï╕ î4
êêêê-ë5 . 4ï5ï7
#êêêêè──────────────
êêêêè2ï1 . 6ï7ï7
Note that the decimal point in the answer is placed directly below
the other decimal points.ïFinally, you can check your answer by adding
5.457 and 21.677.
êêêêë5 . 4ï5ï7
êêëCheckè+ï2ï1 . 6ï7ï7
#êêêêï──────────────
êêêêï2ï7 . 1ï3ï4
1
êêëSubtractê 0 . 9 5
êêêêè -ï0 . 4 9
#êêêêê───────
êïA)ï.46ê B)ï.39ê C)ï.41ê D)ïå
ü
#êêêêèô
#êêêë 0 . ╛î5êêê . 4 9
êêêè-ï0 . 4 9êè Checkè+ï. 4 6
#êêêë ───────êêê ─────
êêêê . 4 6êêê . 9 5
Ç A
2
êêêSubtractë 2 5 . 7 1
êêêêë-è8 . 4 2
#êêêêê─────────
êA)ï16.29êB)ï18.29êC)ï17.29êD)ïå
ü
#êêêèî╖î5 .æ╝î1êêêï8 . 4 2
êêêë 8 . 4 2êèCheckè+ï1 7 . 2 9
#êêêè ─────────êêê─────────
êêêè 1 7 . 2 9êêê2 5 . 7 1
Ç C
3
êêêSubtractë 1 9 . 1 2 5
êêêêë-è3 . 5 0 3
#êêêêê───────────
êA)ï15.622êB)ï14.532êC)ï14.712ë D)ïå
ü
#êêêë ô
#êêêè 1 ╛ .î1 2 5êêë3 . 5 0 3
êêêï-è3 . 5 0 3êCheckï+ï1 5 . 6 2 2
#êêêè ───────────êêè───────────
êêêè 1 5 . 6 2 2êêè1 9 . 1 2 5
Ç A
4
êêêïSubtractê4 2 . 7
êêêêê -è7 . 5 3
#êêêêêè─────────
êA)ï34.17êB)ï35.17êC)ï34.97êD)ïå
ü
#êêêè Äëæ
#êêêè ╣î2 . ╝î0êêê7 . 5 3
êêêï-è7 . 5 3êïCheckï+ï3 5 . 1 7
#êêêè ─────────êêë─────────
êêêè 3 5 . 1 7êêë4 2 . 7 0
Ç B
5
êêêSubtractêï6 . 9 3
êêêêê-ï1 . 6 5 4
#êêêêêè─────────
êA)ï6.536êB)ï4.376êC)ï5.276êD)ïå
ü
#êêêêïô îì
#êêêë 6 . ╛ ╕î0êêë1 . 6 5 4
êêêï-è1 . 6 5 4êCheckè+è5 . 2 7 6
#êêêë ─────────êêë─────────
êêêë 5 . 2 7 6êêë6 . 9 3 0
Ç C
6
êêêSubtractêï8 . 5 3
êêêêê-ï4 . 8
#êêêêêè───────
êïA)ï3.73êB)ï4.74ê C)ï4.83ê D)ïå
ü
#êêêë Æ
#êêêë ╜ .î5 3êêê4 . 8
êêêï-è4 . 8 0êïCheckè+è3 . 7 3
#êêêë ───────êêê───────
êêêë 3 . 7 3êêê8 . 5 3
Ç A
7
êêëSubtractêï1 4
êêêêë-è 5 . 3 2
#êêêêê ─────────
êïA)ï9.78êB)ï8.68ê C)ï8.78ê D)ïå
ü
#êêêê Äèö
#êêêë 1 ╣ .î╡î0êêë5 . 3 2
êêêè -è5 . 3 2êCheckè+è8 . 6 8
#êêêë ─────────êêè─────────
êêêê 8 . 6 8êêè1 4 . 0 0
Ç B
8
êêëSubtractêï1 8 . 0 3
êêêêë-è 3 . 5 6 4
#êêêêê ───────────
ê A)ï15.566ë B)ï14.466ë C)ï14.576ë D)ïå
ü
#êêêê Æïö îì
#êêêë 1 ╜ .î╡ ╕î0êêë3 . 5 6 4
êêêè -è3 . 5 6 4ëCheckè +ï1 4 . 4 6 6
#êêêë ───────────êêè───────────
êêêë 1 4 . 4 6 6êêè1 8 . 0 3 0
Ç B
9
êêè Subtractêï4 3 .
êêêêè -ï2 7 . 8 3 2
#êêêêê───────────
êïA)ï14.958ë B)ï14.258ë C)ï15.168ë D)ïå
ü
#êêêëÄ îìèö ö
#êêêë ╣ ╕ .î╡ ╡î0êêè2 7 . 8 3 2
êêêè-ï2 7 . 8 3 2ëCheckè +ï1 5 . 1 6 8
#êêêë ───────────êêè───────────
êêêë 1 5 . 1 6 8êêè4 3 . 0 0 0
Ç C
10
êêèSubtractêï3 8 4 . 2 5 1
êêêêè-è 1 8 . 7 6 4
#êêêêë ─────────────
ê A)ï365.487ëB)ï265.537ëC)ï365.637ëD)ïå
ü
#êêè Æ îÄ îî îÅ
#êêè3 ╜ ╣ . ╖ ║î1êêè1 8 . 7 6 4
êê -è1 8 . 7 6 4ëCheckè+ 3 6 5 . 4 8 7
#êêè─────────────êê ─────────────
êêè3 6 5 . 4 8 7êê 3 8 4 . 2 5 1
Ç A
11ïA television set is marked down from $463.82 to $347.99.
êëHow much money is marked off?
êïA)ï$212.53è B)ï$115.83è C)ï$85.83ëD)ïå
ü
#êêêêëÉ îìïîÆ
#êêêêï$ 4 ╗ ╕ . ╜î2
êêêë -è 3 4 7 . 9 9
#êêêêï─────────────
êêêêï$ 1 1 5 . 8 3
Ç B
12ïThe outer radius of a piece of pipe is 3.845 inches, and
êëthe inner radius is 3.601 inches.ïHow thick is the pipe?
ë A)ï2.244 inë B)ï.244 inë C)ï1.244 inë D)ïå
ü
êêêêï3 . 8 4 5
êêêë -ï3 . 6 0 1
#êêêêï─────────
êêêêè . 2 4 4 inches
Ç B
13è If your odometer reads 17,832.4 miles at the beginning of
a trip and 19,341.8 miles at the end of the trip, how far did you drive?
èA)ï1,509.4 mië B)ï2,507.4 miëC)ï2,156.4 miëD)ïå
ü
#êêêêïôëÄ
#êêêê1 ╛ ,î3 ╣î1 . 8
êêêè -ï1 7 , 8 3 2 . 4
#êêêê───────────────
êêêêï1 , 5 0 9 . 4 miles
Ç A
14è If you have $436.24 in your checking account and you write
a check for $28.73, how much is left in your checking account?
ëA)ï$395.51ê B)ï$389.26ê C)ï$407.51êD)ïå
ü
#êêêêè ì îÉ
#êêêê $ 4 ╕ ╗ .î2 4
êêêë-ë 2 8 . 7 3
#êêêêè───────────
êêêê $ 4 0 7 . 5 1
Ç C