Multimedia Pre-Algeba/PREALGEBRA.iso/palgebra/chapter1.2b

Text File | 1993-09-24 | 5KB | 317 lines

 315
à 1.2è Adding Whole Numbers.
äè Please Add the following Whole Numbers.
â

êêë 5êê 23êê 123
#êêè+ ╪╬êë + ╠╩êë + ╠═╬
êêë11êê 65êê 579
éSè To Add the two Whole Numbers "123" and" 456", it is first
necessary to add the digits in the ones place.
êêêêë123
#êêêêè+ ╠═╬
êêêêê9
This is followed by adding the digits in the tens place.
êêêêë123
#êêêêè+ ╠═╬
êêêêë 79
Finally, the digits in the hundreds place are added.
êêêêë123êêê 456
#êêêêè+ ╠═╬êïorêï+ ╔╩╦
êêêêë579êêê 579

Thus, the sum of the two numbers is 579.ïNote that ç two numbers
can be added with the number "456" on top and the answer is the same.
The addition of two numbers can also be expressed as, 123 + 456ï=ï579,
but you may prefer to add the numbers in a column as done above.

Finally, when the number "0" is added to any other number, the number
is unchanged.ï(ï5 + 0è=è5 )
 1
êêëAddêë 5
#êêêêë+ ╠

ë A)ï8êë B)ï1êë C)ï9êë D)ïå
ü
êêêêê5
#êêêêë+ ╠
êêêêê9
Ç C
 2
êêëAddêë 5
#êêêêë+ ╚

ë A)ï5êë B)ï6êë C)ï0êë D)ïå
ü
êêêêê5
#êêêêë+ ╚
êêêêê5
Ç A
 3
êêëAddêë 12
#êêêêë+ ╪╬

ë A)ï6êë B)ï18êëC)ï14êëD)ïå
ü
êêêêë 12
#êêêêè + ╪╬
êêêêë 18
Ç B
 4
êêëAddêê7
#êêêêë+ ╠╔

ë A)ï14êëB)ï36êëC)ï48êëD)ïå
ü
êêêêê 7
#êêêêë+ ╠╔
êêêêê48
Ç C
 5
êêëAddêë 23
#êêêêë+ ═╬

ë A)ï73êëB)ï79êëC)ï76êëD)ïå
ü
êêêêê23
#êêêêë+ ═╬
êêêêê79
Ç B
 6
êêëAddêë 223
#êêêêë+ ╠═╩

ë A)ï675êè B)ï655êè C)ï575êè D)ïå
ü
êêêêë 223
#êêêêè + ╠═╩
êêêêë 675
Ç A
 7
êêëAddêë 305
#êêêêë+ ╬╩╔

ë A)ï906êè B)ï926êè C)ï652êè D)ïå
ü
êêêêë 305
#êêêêè + ╬╩╔
êêêêë 926
Ç B
 8
êêëAddêë 4031
#êêêêë+ ╨╬╔╠

ë A)ï8,645êïB)ï12,645ê C)ï4,645êïD)ïå
ü
êêêêë4,031
#êêêêè+ ╨█╬╔╠
êêêêè 12,645
Ç B
 9
êêëAddêë 83,107
#êêêêë+ ╤╩█╬╨╩

ë A)ï175,789êB)ï15,789ê C)ï75,789ê D)ïå
ü
êêêêë83,107
#êêêêè+ ╤╩█╬╨╩
êêêêè 175,789
Ç A
 10
êêëAddêë 503,217
#êêêêë+ ═╬╩█╧╠╔

ë A)ï106,432êB)ï965,958êC)ï1,065,958ëD)ïå
ü
êêêêë503,217
#êêêê +╪╪╪═╬╩█╧╠╔
êêêêè1,065,958
Ç C
 11
êêêAddê 23 + 56


êA)ï79êëB)ï83êëC)ï27êëD)ïå
ü

êêêë 23 + 56è =è 79
Ç A
 12
êêêAddë 23,245 + 45,123


êA)ï42,197ê B)ï68,368ê C)ï73,285ê D)ïå
ü

êêêï23,245 + 45,123è=è68,368
Ç B
äïPlease add the following Whole Numbers by the "Carrying
êêOver" method.
â
#êêêêë îî
êêêêë 257
#êêêêè+ï╔╬═
êêêêë 422
éS To add the two Whole Numbers "257" and "165," it is necessary
to first add the digits in the ones place.ïSince the sum of seven and
five is the two digit number 12, it will be necessary to write the "2"
down in the ones column and carry the "1" over to the tens column.
#êêêêë î
êêêêë257
#êêêêè+ ╔╬═
êêêêê2
Then, the digits in the tens column are added and found to be the two
digit number 12.ïIt will once again be necessary to write the "2" in
the tens column and carry the "1" over to the hundreds column.
#êêêêëîî
êêêêë257
#êêêêè+ ╔╬═
êêêêë 22
Finally, the digits in the hundreds column are added and recorded in
#the hundreds place.êêîî
êêêêë257
#êêêêè+ ╔╬═
êêêêë422ëThus, the sum is 422.
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êêêè Addê 64
#êêêêë + ╪╨

ë A)ï72êëB)ï68êëC)ï74êëD)ïå
ü
#êêêêë î
êêêêë 64
#êêêêè + ╪╨
êêêêë 72
Ç A
 14
êêêëAddê 69
êêêêêï27
#êêêêë + ╪═╨

ë A)ï144êè B)ï164êè C)ï154êè D)ïå
ü
#êêêêë ì
êêêêë 69
êêêêë 27
#êêêêè+ ╪═╨
êêêêë154
Ç C
 15
êêêè Addê 898
#êêêêë + ╠═╧

ë A)ï9,842êïB)ï1,355êïC)ï1,265êïD)ïå
ü
#êêêêë îî
êêêêë 898
#êêêêè+╪╪╠═╧
êêêêè 1,355
Ç B
 16
êêêèAddêï358
êêêêê 271
#êêêêë+ï═╤═

ë A)ï968êè B)ï1,224êïC)ï1,406êïD)ïå
ü
#êêêêë ìî
êêêêë 358
êêêêë 271
#êêêêè+╪╪═╤═
êêêêè 1,224
Ç B
 18
êêë Addêè 63,428
#êêêêè+ï╧╩█╔╨╬

ë A)ï145,218êB)ï136, 514ëC)ï135,614ëD)ïå
ü
#êêêêêîî
êêêêè 63,428
#êêêê +╪╪╧╩█╔╨╬
êêêêè135,614
Ç C
 19êêAddê25,624
êêêêêï368
êêêêê4,172
#êêêêè+ï╨═█╠╩╬

ë A)ï115,590êB)ï105,460ëC)ï215,090ëD)ïå
#üêêêë îî îì
êêêêë25,624
êêêêê 368
êêêêë 4,172
#êêêê + ╪╪╨═█╠╩╬
êêêêè 115,590
Ç A
 20
êêêèAddë21,783,140
#êêêêï+ ╪╩█╬╔╚█╠═╬

ë A)ï25,638,426è B)ï24,393,596è C)ï3,614,086ëD)ïå
ü
#êêêêè î
êêêêè21,783,140
#êêêë + ╪╪╪╩█╬╔╚█╠═╬
êêêêè24,393,596
Ç B
 21è Find the total cost if $42 is spent for a coat and $74
êêfor a pair of shoes.


ë A)ï$116êèB)ï$122êèC)ï$132êïD)ïå
ü


êêêè $42 + $74è=è$116
Ç A
 22è Find the total attendance for January if week one has
êê4,280, week two has 5,830, and week three has 7,852.


ë A)ï15,834ê B)ï19,226ê C)ï17,962ë D)ïå
ü


êêè 4,280 + 5,830 + 7,852è=è17,962
Ç C
 23è Find the total sales if you sell $4,526 in March and
êê$4,863 in April.


ë A)ï$9,389ê B)ï$8,763ê C)ï$7,942ë D)ïå
ü


êêê$4,526 + $4,863è=è$9,389
Ç A
 24è Find the total milage driven if you drive 450 on Monday,
êê475 on Tuesday, and 385 on Wednesday.


ë A)ï2,314êïB)ï1,310êïC)ï986êïD)ïå
ü


êêè 450 + 475 + 385è=è1,310 miles
Ç B