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- 352
- àï1.5ëDividing Whole Numbers.
- äè Please divide the following Whole Numbers.
- â
- êê 8êêè72êêè75
- #êë ┌──êê┌────êê┌────
- #êè 9 │72êë4 │ 288êë3 │ 225
- #êê╧╩êêï╩╨╪êêï╩╔╪
- êêêêë 8êêè15
- #êêêêë╪╨êêè╔═
- éS To divide the Whole Number "225" by the Whole Number "3", it
- is first necessary to divide 3 into 22.ïThe answer, 7, is recorded as
- shown below.êêêï7
- #êêêêè ┌────
- #êêêêï3 │ 225
-
- The number "7" is multiplied times "3" to get 21.ïThis number is
- recorded under the "22".êè 7
- #êêêêè ┌────
- #êêêêï3 │ 225
- #êêêêë ╩╔╪
-
- Twenty-one is subtracted from 22 and the five is brought down.
- êêêêê7
- #êêêêè ┌────
- #êêêêï3 │ 225
- #êêêêë ╩╔╪
- êêêêê15
-
- Next, the "3' must be divided into "15".ïThe answer, 5, is recorded
- next to the 7 in the ones place.ïThis "5" is multiplied times the
- "3" and the answer, 15, is recorded as shown.
- êêêêê75
- #êêêêè ┌────
- #êêêêï3 │ 225
- #êêêêë ╩╔╪
- êêêêê15
- #êêêêê╔═
-
- Thus, 225 divided by 3 is 75.ïNote that any non-zero number divided
- into itself is 1.ïAlso , any number divided by one is unchanged.
- Finally, division by zero is not allowed, because that would be infinity
- and infinity is not a real number.ïDon't forget to use your built in
- calculator if you need it.
- 1
- #êêëDivideêï┌────
- #êêêêè 4 │ 28
-
- ëA)ï7êëB)ï6êë C)ï8êë D)ïå
- ü
- êêêêê7
- #êêêêè ┌───
- #êêêêï4 │ 28
- #êêêêë ╩╨
- Ç A
- 2
- #êêë Divideêï┌────
- #êêêêë7 │ 49
-
- ëA)ï9êëB)ï8êë C)ï7êë D)ïå
- ü
- êêêêê7
- #êêêêè ┌───
- #êêêêï7 │ 49
- #êêêêë ╠╤
- Ç C
- 3
- #êêë Divideêï┌────
- #êêêêë5 │ 75
-
- ëA)ï20êè B)ï15êëC)ï25êëD)ïå
- ü
- êêêêë 15
- #êêêêè ┌───
- #êêêêï5 │ 75
- #êêêêë ═╪
- êêêêë 25
- #êêêêë ╩═
- Ç B
- 4
- #êêë Divideêï┌────
- #êêêêë3 │ 690
-
- ëA)ï203êèB)ï230êè C)ï23êëD)ïå
- ü
- êêêêë 230
- #êêêêè ┌────
- #êêêêï3 │ 690
- #êêêêë ╬╪╪
- êêêêê9
- #êêêêê╤╪
- êêêêê 0
- #êêêêê ╚
- Ç B
- 5
- #êêë Divideêï┌─────
- #êêêêë6 │ 1824
-
- ëA)ï340êèB)ï34êëC)ï304êè D)ïå
- ü
- êêêêê304
- #êêêêè ┌─────
- #êêêêï6 │ 1824
- #êêêêë ╔╨╪╪
- êêêêê 24
- #êêêêê ╩╠
- Ç C
- 6
- #êêë Divideêï┌─────
- #êêêêë8 │ 6432
-
- ëA)ï804êèB)ï84êëC)ï840êè D)ïå
- ü
- êêêêê804
- #êêêêè ┌─────
- #êêêêï8 │ 6432
- #êêêêë ╬╠╪╪
- êêêêê 32
- #êêêêê ╦╩
- Ç A
- 7
- #êêë Divideêï┌─────
- #êêêêë6 │ 6324
-
- ëA)ï1,054ê B)ï154êè C)ï1,540êïD)ïå
- üêêêê1054
- #êêêêè ┌─────
- #êêêêï6 │ 6324
- #êêêêë ╬╪╪╪
- êêêêê32
- #êêêêê╦╚╪
- êêêêê 24
- #êêêêê ╩╠
- Ç A
- 8
- #êêë Divideêï┌─────
- #êêêêë7 │ 3920
-
- ëA)ï560êèB)ï5,600êïC)ï56êëD)ïå
- üêêêê 560
- #êêêêè ┌─────
- #êêêêï7 │ 3920
- #êêêêë ╦═╪╪
- êêêêê42
- #êêêêê╠╩╪
- êêêêêï0
- #êêêêêï╚
- Ç A
- 9
- #êêë Divideêï┌──────
- #êêêêë5 │ 17350
-
- ëA)ï347êèB)ï3,047êïC)ï3,470êïD)ïå
- üêêêê 3470
- #êêêêè ┌──────
- #êêêêï5 │ 17350
- #êêêêë ╔═╪╪╪
- êêêêê23
- #êêêêê╩╚╪╪
- êêêêê 35
- #êêêêê ╦═╪
- êêêêêè0
- #êêêêêè╚
- Ç C
- äïPlease divide the following Whole Numbers and record the
- êêremainder with the answer.
- âêêêêêè 69r1
- #êêê 5r2êêè ┌──────
- #êêë┌─────êêï6 │ 415
- #êêè5 │ 27êêê ╦╬╪
- #êêê╩═êêêï55
- #êêê 2êêêï═╠
- êêêêêêë1
-
- éS To divide the Whole Number "415" by "6", you should proceed as
- in the previous problems until you get to the "ones" place.
- êêêêê69
- #êêêêè ┌──────
- #êêêêï6 │ 415
- #êêêêë ╦╬╪
- êêêêê55
- #êêêêê═╠
- êêêêê 1
-
- At this point you realize that "6" does not divide evenly into "415".
- The extra "1" is the remainder and is recorded as "r1" next to the
- "69". Thus the answer is 69r1.ïYou could say that 6 divides into
- 415 sixty-nine times with one left over.
- 10
- #êêèDivideêë ┌────
- #êêêêë 4 │ 26
-
- ë A)ï5r4êè B)ï6r2êè C)ï7r1êè D)ïå
- ü
- êêêêê 6r2
- #êêêêë┌─────
- #êêêêè4 │ 26
- #êêêêê╩╠
- êêêêê 2
- Ç B
- 11
- #êêèDivideêë ┌────
- #êêêêë 7 │ 73
-
- ë A)ï10r3êèB)ï9r6êè C)ï11r1êèD)ïå
- ü
- êêêêê10r3
- #êêêêë┌─────
- #êêêêè7 │ 73
- #êêêêê╧╪
- êêêêê 3
- #êêêêê ╚
- êêêêê 3
- Ç A
- 12
- #êêèDivideêë ┌────
- #êêêêë 5 │ 842
-
- ë A)ï158r2êïB)ï181r4êïC)ï168r2êïD)ïå
- üêêêê 168r2
- #êêêêë┌──────
- #êêêêè5 │ 842
- #êêêêê═╪╪
- êêêêê34
- #êêêêê╦╚╪
- êêêêê 42
- #êêêêê ╠╚
- êêêêêï2
- Ç C
- 13
- #êêèDivideêë ┌────
- #êêêêë 7 │ 814
-
- ë A)ï114r2êïB)ï116r2êïC)ï112r2êïD)ïå
- üêêêê 116r2
- #êêêêë┌──────
- #êêêêè7 │ 814
- #êêêêê╧╪╪
- êêêêê11
- #êêêêê╪╧╪
- êêêêê 44
- #êêêêê ╠╩
- êêêêêï2
- Ç B
- äïPlease divide the following Whole Numbers.
- âêêêê21r6
- #êêêêè ┌──────
- #êêêê 23 │ 489
- #êêêêë ╠╬╪
- êêêêê29
- #êêêêê╩╦
- êêêêê 6
- éS To divide 489 by 23, estimate how many times 23 will go
- into 48.ïYou can find a first guess by dividing 2 into 4.ïIf that
- guess does not work, lower the guess by one.ïSince 2 goes into 4 twice,
- record this estimate above the 8.
- êêêêê 2
- #êêêêë┌─────
- #êêêêï23 │ 489
- Multiply 2 times 23 and record the answer under the 48.
- êêêêê 2
- #êêêêë┌─────
- #êêêêï23 │ 489
- #êêêêê╠╬╪
- êêêêê 29
- Six is subtracted from 8 and the 9 is brought down.ïNext, divide 23
- into 29.êêêê21
- #êêêêë┌─────
- #êêêêï23 │ 489
- #êêêêê╠╬╪
- êêêêê 29
- #êêêêê ╩╦è Thus, the answer is 21r6.
- êêêêêï6
- 14
- #êêê Divideê┌───
- #êêêêè 41 │ 85
-
- ë A)ï42r1êèB)ï2r3êè C)ï28r2êèD)ïå
- ü
- êêêêê2r3
- #êêêêè ┌─────
- #êêêê 41 │ 85
- #êêêêë ╨╩╪
- êêêêê3
- Ç B
- 15
- #êêê Divideê┌────
- #êêêêè 24 │ 647
-
- ë A)ï26r23êïB)ï28r2êèC)ï25r3êèD)ïå
- üêêêê 26r23
- #êêêêè ┌───────
- #êêêê 24 │ 647
- #êêêêë ╠╨╪
- êêêêë 167
- #êêêêë ╔╠╠
- êêêêê23
- Ç A
- 16
- #êêê Divideê┌────
- #êêêêè 31 │ 856
-
- ë A)ï42r4êèB)ï26r3êèC)ï27r19êïD)ïå
- üêêêê 27r19
- #êêêêè ┌───────
- #êêêê 31 │ 856
- #êêêêë ╬╩╪
- êêêêë 236
- #êêêêë ╩╔╧
- êêêêê19
- Ç C
- 17
- #êêê Divideê┌────
- #êêêêè 22 │ 861
-
- ë A)ï28r19êïB)ï39r3êèC)ï41r3êèD)ïå
- üêêêê 39r3
- #êêêêè ┌───────
- #êêêê 22 │ 861
- #êêêêë ╬╬╪
- êêêêë 201
- #êêêêë ╔╤╨
- êêêêê 3
- Ç B
- 18
- #êêê Divideê┌──────
- #êêêêè 91 │ 6845
-
- ë A)ï70r25êïB)ï75r20êïC)ï65r30êïD)ïå
- üêêêêï75r20
- #êêêêè ┌────────
- #êêêê 91 │ 6845
- #êêêêë ╬╦╧╪
- êêêêê475
- #êêêêê╠══
- êêêêê 20
- Ç B
- 19
- #êêê Divideê┌──────
- #êêêêè 68 │ 8569
-
- ë A)ï126r1êïB)ï226r25ê C)ï386r52ê D)ïå
- üêêêê 126r1
- #êêêêè ┌────────
- #êêêê 68 │ 8569
- #êêêêë ╬╨╪╪
- êêêêë 176
- #êêêêë ╔╦╬╪
- êêêêê409
- #êêêêê╠╚╨
- êêêêêï1
- Ç A
-
-