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- àï3.5è Dividing Decimal Numbers.
- äè Please divide the following Decimal Numbers.
- #âêêêï┌──────êê2.07ï≈ï2.1
- #êêè Divideï2.3 │ 4.78êë┌─────────────
- #êèand round the answer to theê 23 │ 47.80
- #êènearest tenth.êêêë╠╬╪╪╪
- êêêêêêêï1 80
- #êèFirst, you should adjust theêë ╔╪╬╔
- êèdecimal point.êêêê 19
- éS To divide 4.78 by 2.3, you should first move the decimal point
- in "2.3" to the right until you have a Whole Number.
- êêêêë 23
-
- Then, you should move the decimal point in "4.78" the same number of
- places to the right.êë 47.8
-
- #êêêêè ┌──────êêë┌───────
- #Thus, the division problem, 2.3 │ 4.78 , is changed to 23 │ 47.80 .
- Now place the decimal point for the answer directly above the decimal
- point in the adjusted problem.ê.
- #êêêêë┌───────
- #êêêêï23 │ 47.80
-
- Finally, you should divide the numbers as though they are Whole Numbers.
- êêêêê 2.07ï≈ï2.1
- #êêêêë┌──────────────
- #êêêêï23 │ 47.80
- #êêêêê╠╬╪╪╪
- êêêêê 1 80
- #êêêêê ╔╪╬╔
- êêêêêè19
- # 1êêêè ┌───────
- #êêê Divideè 8 │ 43.92
-
-
- ë A)ï5.49êèB)ï5.69êèC)ï4.49êèD)ïå
- üêêêë5.49
- #êêêê ┌───────
- #êêêë 8 │ 43.92
- #êêêêè╠╚╪╪╪
- êêêêè 3 9
- #êêêêè ╦╪╩╪
- êêêêë 72
- #êêêêë ╧╩
- Ç A
- # 2êêêë ┌───────
- #êêêèDivideè 6 │ 13.89
-
-
- ë A)ï1.36êèB)ï2.315êïC)ï2.34êèD)ïå
- üêêêë2.315
- #êêêê ┌────────
- #êêêë 6 │ 13.890êNote that since the direc-
- #êêêêè╔╩╪╪╪╪êtions did not say to round
- êêêêè 1 8êïoff the answer, another "0"
- #êêêêè ╔╪╨╪╪êwas inserted next to the 9.
- êêêêê9ê If this had not divided
- #êêêêê╬╪êevenly, we would have
- êêêêê30êinserted another zero until
- #êêêêê╦╚êit divided evenly.
- Ç B
- # 3êêêë ┌───────
- #êêêèDivideè36 │ 165.6
-
-
- ë A)ï3.7êè B)ï3.6êè C)ï4.6êè D)ïå
- üêêêë4.6
- #êêêê ┌───────
- #êêêë36 │ 165.6
- #êêêêè╔╠╠╪╪
- êêêêè 21 6
- #êêêêè ╩╔╪╬
-
-
- Ç C
- # 4êêêë ┌───────
- #êêêèDivideè76 │ 26.22
-
-
- ë A)ï3.36êèB)ï.345êèC)ï.452êèD)ïå
- üêêêë .345
- #êêêê ┌────────
- #êêêë76 │ 26.22
- #êêêêè╩╩╪╨╪╪
- êêêêè 3 42
- #êêêêè ╦╪╚╠╪
- êêêêë 380
- #êêêêë ╦╨╚
- Ç B
- # 5êêêë ┌───────
- #êêêèDivideè.6 │ 11.04
-
-
- ë A)ï1.87êèB)ï28.4êèC)ï18.4êèD)ïå
- üêêêêêè18.4
- #êê Adjust the decimalê ┌───────
- #êëpoints to "6" andêè6 │ 110.4
- #êë"110.4".êêêï╪╬╪╪╪
- êêêêêêï50
- #êêêêêêï╠╨╪╪
- êêêêêêè2 4
- #êêêêêêè╩╪╠
- Ç C
- # 6êêêê┌───────
- #êêêè Divideï5.3 │ 12.72
-
-
- ë A)ï2.4êè B)ï2.34êèC)ï2.134êïD)ïå
- üêêêêêè 2.4
- #êê Adjust the decimalê ┌───────
- #êëpoints to "53" andê 53 │ 127.2
- #êë"127.2".êêêï╔╚╬╪╪
- êêêêêêï21 2
- #êêêêêêï╩╔╪╩
-
-
- Ç A
- # 7êêêê┌───────
- #êêêè Divideï.24 │ 1.728
-
-
- ë A)ï1.253êïB)ï7.2êè C)ï4.317êïD)ïå
- üêêêêêè 7.2
- #êê Adjust the decimalê ┌───────
- #êëpoints to "24" andê 24 │ 172.8
- #êë"172.8".êêêï╔╬╨╪╪
- êêêêêêè4 8
- #êêêêêêè╠╪╨
-
-
- Ç B
- # 8êï┌───────
- #ë Divideï4.5 │ 6.432ïand round the answer to the nearest tenth.
-
-
- ë A)ï1.5êè B)ï1.6êè C)ï1.4êè D)ïå
- üêêêêêè1.42ï≈ï1.4
- #êê Adjust the decimalê ┌──────────────
- #êëpoints to "45" andê 45 │ 64.32
- #êë"64.32".êêêï╠═╪╪╪ë The answer rounded
- êêêêêê 19 3êto the nearest
- #êêêêêê ╔╨╪╚╪ë tenth is 1.4.
- êêêêêêï1 32
- #êêêêêêï╪╪╤╚
- êêêêêêè 42
- Ç C
- # 9ê┌───────
- #è Divideï3.2 │ 15.1èand round the answer to the nearest hundredth.
-
-
- ë A)ï5.73êèB)ï4.72êèC)ï4.83êèD)ïå
- üêêêêêè 4.718ï≈ï4.72
- #êê Adjust the decimalê ┌─────────────────
- #êëpoints to "32" andê 32 │ 151.000
- #êë"151".ïAlso, insertêè ╔╩╨╪╪╪╪è The answer rounded
- êëzeros out to theêêï23 0ë to the nearest
- #êëthousandths place forêè ╩╩╪╠╪╪è hundredth is 4.72.
- êëround off purposes.êêï60
- #êêêêêêë╦╩╪
- êêêêêêë280
- #êêêêêêë╩═╬
- êêêêêêë 24
- Ç B
- # 10ë ┌───────
- #èDivideï3.14 │ 4.83èand round the answer to the nearest hundredth.
-
-
- ë A)ï1.54êèB)ï2.54êèC)ï1.36êèD)ïå
- üêêêêêè 1.538ï≈ï1.54
- #êê Adjust the decimalê ┌─────────────────
- #êëpoints to "314" andë 314 │ 483.000
- #êë"483".ïAlso, insertêè ╦╔╠╪╪╪╪è The answer rounded
- êëzeros out to theêê 169 0ë to the nearest
- #êëthousandths place forêè╔═╧╪╚╪╪è hundredth is 1.54.
- êëround off purposes.êë 12 00
- #êêêêêêï╪╤╪╠╩╪
- êêêêêêè2 580
- #êêêêêêè╩╪═╔╩
- êêêêêêë 68
- Ç A
- # 11ë┌────────
- #èDivideè12 │ 2.3847ïand round the answer to the nearest thousandth.
-
-
- ë A)ï.178êèB)ï.199êèC)ï.293êèD)ïå
- üêêêêêè.1987ï≈ï.199
- #êê There is no needêè┌─────────────────
- #êëto adjust the decimalë12 │ 2.3847
- #êëpoints.ïAlso, thereêè ╔╪╩╪╪╪è The answer rounded
- êëis no need to insertêè 1 18ë to the nearest
- #êëzeros since the "7"êë╔╪╚╨╪╪è thousandth is .199.
- êëis in the ten-thousandthsê 104
- #êëplace.êêêë ╪╤╬╪
- êêêêêêè 104
- #êêêêêêè ╪╤╬
- êêêêêêë87
- #êêêêêêë╨╠
- êêêêêêë 3
- Ç B
- 12èIf Bill worked 40.8 hours earning $187.68, how much
- êë did he make per hour?
-
-
- ë A)ï$4.60êïB)ï$3.90êïC)ï$4.15êïD)ïå
- üêêêêêë4.6
- #êê Adjust the decimalê ┌────────
- #êëpoints to "408" andë 408 │ 1876.8
- #êë"1876.8".êêê ╔╬╦╩╪╪ëHe makes $4.60
- êêêêêêï244 8ëper hour.
- #êêêêêêï╩╠╠╪╨
- êêêêêêë 0
-
- Ç A
- 13èA roast weighing 4.2 pounds cost a total of $13.65.
- êë What is the price per pound?
-
-
- ë A)ï$3.69êïB)ï$3.25êïC)ï$3.49êïD)ïå
- üêêêêêë3.25
- #êê Adjust the decimalê ┌────────
- #êëpoints to "42" andê 42 │ 136.50
- #êë"136.5".êêêï╔╩╬╪╪╪ëThe price per
- êêêêêêï10 5ë pound is $3.25.
- #êêêêêêï╪╨╪╠╪
- êêêêêêè2 10
- #êêêêêêè╩╪╔╚
- Ç B
- 14ëIf a single screw weighs .035 oz, how many screws are in
- êê 16 oz bag?
-
-
- ë A)ï382êè B)ï556êè C)ï457êè D)ïå
- üêêêêêè 457.1
- #êê Adjust the decimalê ┌─────────
- #êëpoints to "35" andê 35 │ 16000.0
- #êë"16000".êêêï╔╠╚╪╪╪╪è The answer rounded
- êêêêêêï200êto the nearest
- #êêêêêêï╔╧═╪╪ëWhole Number is
- êêêêêêè250ë 457.
- #êêêêêêè╩╠═╪
- êêêêêêë5 0
- #êêêêêêë╦╪═
- êêêêêêë1 5
- Ç C
-
-