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- 328
- àï1.4è Multiplying Whole Numbers.
- äè Please Multiply the following Whole Numbers.
- âSèMultiply
- #êêêêêêÅ ì
- êêë 7êêê2 8 4
- #êêèx ╪╬êêè x ╪╪╪╪╪═
- êêë42êêë1,4 2 0
- éS To Multiply the Whole Number "5" times the Whole Number
- "284", it is first necessary to multiply 5 times 4.ïThe answer, 20,
- is recorded with the "0" in the ones place and the "2" carried to the
- #tens place.êêêèì
- êêêêë2 8 4
- #êêêêïxï╪╪╪╪═
- êêêêêï0
-
- Next, the "5" is multiplied times "8" and the answer, 40 is added to the
- "2" that was carried over.ïThis sum of 42 is recorded by writing the
- "2" in the tens column and the "4" is carried to the hundreds column.
- #êêêêëÅ ìêêêèÅ ì
- êêêêë2 8 4êêê 2 8 4
- #êêêêïxï╪╪╪╪═êêëx╪╪╪╪╪╪═
- êêêêê2 0êêë 1,4 2 0
-
- Finally, the "5" is multiplied times "2" and the answer, 10, is added to
- the "4" that was carried over.ïThis sum of 14 is recorded with the
- "4" in the hundreds column and the "1" in the thousands place.
- Note that "0" times any number is always going to be "0", and that "1"
- times any number does not change the number.ïAlso, multiplication can
- be expressed as follows:è (5 ∙ 284è=è1,420).ïYou may prefer to
- do your multiplication in a column as was done above.
-
- è Remember if you have trouble recalling one of the multiplication
- table facts, you can use your built in calculator to refresh your
- memory.
- 1
- êêë Multiplyêï5
- #êêêêë xï╠
-
- ëA)ï15êëB)ï20êëC)ï25êëD)ïå
- ü
-
- êêêêê 5
- #êêêêëx ╪╠
- êêêêê20
- Ç B
- 2
- êêè Multiplyêè 6
- #êêêêë xï╬
-
- ëA)ï36êëB)ï12êëC)ï24êëD)ïå
- ü
-
- êêêêê 6
- #êêêêëx ╪╬
- êêêêê36
- Ç A
- 3
- êêë Multiplyêï9
- #êêêêë x ╪╚
-
- ëA)ï18êëB)ï9êë C)ï0êë D)ïå
- ü
-
- êêêêê 9
- #êêêêëx ╪╚
- êêêêê 0
- Ç C
- 4
- êêè Multiplyêè 8
- #êêêêë xï═
-
- ëA)ï40êëB)ï42êëC)ï45êëD)ïå
- ü
-
- êêêêê 8
- #êêêêëx ╪═
- êêêêê40
- Ç A
- 5
- êêë Multiplyêï53
- #êêêêë xï╪╠
-
- ëA)ï196êè B)ï212êè C)ï206êè D)ïå
- ü
- #êêêêë î
- êêêêë 53
- #êêêêèx ╪╪╠
- êêêêë212
- Ç B
- 6
- êêè Multiplyêè 86
- #êêêêë xï╪═
-
- ëA)ï380êè B)ï560êè C)ï430êè D)ïå
- ü
- #êêêêêÄ
- êêêêê86
- #êêêêè xï╪═
- êêêêë 430
- Ç C
- 7
- êêë Multiplyêï88
- #êêêêë xï╪╦
-
- ëA)ï264êè B)ï380êè C)ï2,424êïD)ïå
- ü
- #êêêêêì
- êêêêê88
- #êêêêè x ╪╪╦
- êêêêë 264
- Ç A
- 8
- êêè Multiplyêè 824
- #êêêêë xï╪╪╠
-
- ëA)ï4,183êïB)ï3,296êïC)ï2,984êïD)ïå
- ü
- #êêêêê î
- êêêêê824
- #êêêêè x╪╪╪╪╠
- êêêêë3,296
- Ç B
- 9
- êêëMultiplyêï700
- #êêêêëxï╪╪═
-
- ëA)ï3,500êïB)ï42,500ê C)ï2,100êïD)ïå
- ü
-
- êêêêë 700
- #êêêêèx ╪╪╪═
- êêêêè 3,500
- Ç A
- 10
- êêèMultiplyêè 742
- #êêêêëxï╪╪╦
-
- ëA)ï4,226êïB)ï3,226êïC)ï2,226êïD)ïå
- ü
- #êêêêë î
- êêêêë 742
- #êêêêèx╪╪╪╪╦
- êêêêè 2,226
- Ç C
- 11
- êêè Multiplyêï3407
- #êêêêè xï╪╪╪═
-
- ëA)ï17,035êïB)ï15,406ê C)ï19,035ê D)ïå
- ü
- #êêêêë ì Ä
- êêêêë 3407
- #êêêêèx ╪╪╪╪═
- êêêêè 17,035
- Ç A
- 12
- êê Multiplyêè 69,856
- #êêêêèxï╪╪╪╪╪╧
-
- ëA)ï498,224êB)ï488,992êC)ï588,992êD)ïå
- ü
- #êêêêëæÉ ÄÅ
- êêêêë69,856
- #êêêêïx╪╪╪╪╪╪╪╧
- êêêêè 488,992
- Ç B
- 13
- êê Multiplyêè 87,000
- #êêêêèxï╪╪╪╪╪╠
-
- ëA)ï368,000êB)ï358,000êC)ï348,000êD)ïå
- ü
- #êêêêëì
- êêêêë87,000
- #êêêêïx╪╪╪╪╪╪╪╠
- êêêêè 348,000
- Ç C
- äïPlease Multiply the following two or three digit Whole
- êêNumbers.
- #âêêêë î
- êêêêë 83
- #êêêêë╪╩╠
- êêêêë332
- #êêêêè╪╔╬╬╪
- êêêêè1,992
- éSïTo Multiply the Whole Number"24" times the Whole Number
- "83", it is first necessary to multiply the "4" times "83".
- #êêêêë î
- êêêêë 83
- #êêêêèx ╪╩╠
- êêêêë332
- The answer, 332, is recorded just as was done in the previous problems.
- Next, it is necessary to multiply the "2" times "83".ïThis product,
- #166, is recorded as follows:ë î
- êêêêë 83
- #êêêêèx ╪╩╠êêê î
- êêêêë332êêê 83
- #êêêêè╪╔╬╬╪êêëx ╪╩╠
- Finally, the "332" and "1660" are added together.ê 332
- #êêêêêêêë ╪╔╬╬╪
- êêêêêêêë 1,992
-
- Thus, the product of 24 and 83 is 1,992.ïNote that the answer is the
- same no matter which number is on top.
- 14
- êêèMultiplyêè36
- #êêêêëx ╩╠
-
-
- ë A)ï864êè B)ï956êè C)ï728êè D)ïå
- #üêêêê ì
- êêêêê36
- #êêêêè x ╪╩╠
- êêêêë 144
- #êêêêë╪╧╩╪
- êêêêë 864
- Ç A
- 15
- êêèMultiplyêè30
- #êêêêëx ╠╚
-
-
- ë A)ï120êè B)ï1,200êïC)ï12êëD)ïå
- ü
- êêêêê30
- #êêêêè x ╪╠╚
- êêêêê00
- #êêêêë╔╩╚╪
- êêêêè 1,200
- Ç B
- 16
- êêèMultiplyêè83
- #êêêêëx ╩╧
-
-
- ë A)ï1,988êïB)ï2,241êïC)ï3,468êïD)ïå
- #üêêêê ì
- êêêêê83
- #êêêêè x ╪╩╧
- êêêêë 581
- #êêêêë╔╬╬╪
- êêêêè 2,241
- Ç B
- 17
- êêèMultiplyêè416
- #êêêêëx ╪╩╚
-
-
- ë A)ï83,220ê B)ï8,120êïC)ï8,320êïD)ïå
- #üêêêêïî
- êêêêê416
- #êêêêè x ╪╪╩╚
- êêêêë8,320
- Ç C
- 18
- êêèMultiplyêè677
- #êêêêëx ╪╬═
-
-
- ë A)ï44,005ê B)ï42,685ê C)ï46,465ê D)ïå
- #üêêêê ÄÄ
- êêêêê677
- #êêêêè x ╪╪╬═
- êêêêë 3385
- #êêêêë╠╚╬╩╪
- êêêêè 44,005
- Ç A
- 19
- êêèMultiplyêè605
- #êêêêëx ╩╦╧
-
-
- ë A)ï462,810êB)ï143,385êC)ï28,463ê D)ïå
- #üêêêêïÄ
- êêêêê605
- #êêêêè x ╪╩╦╧
- êêêêë 4235
- êêêêë1815
- #êêêêè ╔╩╔╚╪╪
- êêêêè143,385
- Ç B
- 20è If you earn $450 per week, find the total pay for 40
- êêweeks of work.
-
-
- ë A)ï$20,000êB)ï$15,000êC)ï$18,000êD)ïå
- ü
- #êêêêë ì
- êêêêë 450
- #êêêêè x ╪╠╚
- êêêêï$18,000
- Ç C
- 21èIf your car gets 42 miles per gallon and your tank holds
- êë 16 gallons, how far can you drive on a tank of gas?
-
-
- ë A)ï672 mi.êB)ï726 mi.êC)ï598 mi.êD)ïå
- ü
-
-
- êêêè 42 x 16è=è672 mi.
-
- Ç A
- 22èIf you can work 27 problems in one hour, how many
- êë problems can you work in 8 hours?
-
-
- ë A)ï236êè B)ï216êè C)ï198êè D)ïå
- ü
-
-
- êêêè 27 x 8è=è216
-
- Ç B
- 23èIf you receive a check of $265 per week, how much would
- êë you receive in 52 weeks?
-
-
- ë A)ï$12,680êB)ï$13,780êC)ï$14,280êD)ïå
- ü
-
-
- êêêï$265 x 52è=è$13,780
-
- Ç B
-
-
-
-