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- 261
- à 3.4è Multiplying Decimal Numbers
- äèPlease multiply the following Decimal Numbers.
- âêê Multiplyë 32.5
- êêêêêx .46
- #êêêêê ────
- êêêêê 1950
- êêêêê1300
- #êêêêë ──────
- êêêêë 14.950
- éS To multiply the Decimal Numbersï32.5 and .46, you should
- first multiply them as though they are whole numbers.
- êêêêë32.5
- êêêêè x .46
- #êêêêë────
- êêêêë1950
- êêêêè 1300
- #êêêêè ─────
- êêêêè 14950
-
- To locate the decimal in the answer, you should count the total number
- of decimal places in the two original numbers.
-
- The original numbers, 32.5 and .46, have a total of three decimal places
- counting the place for the "5" and the two places for the "4" and "6".
- The decimal point in the answer should be located three places from the
- right.
- êêêêë32.5
- êêêêè x .46
- #êêêêë────
- êêêêë1950
- êêêêè 1300
- #êêêêè──────
- êêêêè14.950
-
- To see why this works, change the decimal to fractions.
-
- 32.5 x .46ï=ï32 5/10 x 46/100ï=ï325/10 x 46/100ï=ï14950/1000
-
- Dividing by "1000" moves the decimal three places to the left.ïThe
- answer isï14.950.
- 1
- êêêè Multiplyë7.5
- êêêêê x 3.4
- #êêêêêï────
-
- ê A)ï25.5ê B)ï26.5ê C)ï24.5ê D)ïå
-
- #üêêêë ì
- êêêêë7.5
- êêêêèx 3.4
- #êêêêè ────
- êêêêë300
- êêêêè 225
- #êêêêè─────
- êêêêè25.50
- Ç A
- 2
- êêêè Multiplyë9.8
- êêêêê x 5.7
- #êêêêêï────
-
- ê A)ï54.56êB)ï55.86êC)ï56.76êD)ïå
-
- #üêêêë É
- êêêêë9.8
- êêêêèx 5.7
- #êêêêè ────
- êêêêë686
- êêêêè 490
- #êêêêè─────
- êêêêè55.86
- Ç B
- 3
- êêêè Multiplyë58.7
- êêêêêïxï25
- #êêêêêï─────
-
- ê A)ï1475.5ë B)ï1467.5ë C)ï146.75ë D)ïå
-
- #üêêêë ÅÄ
- êêêêë58.7
- êêêêè xï25
- #êêêêè ─────
- êêêêë2935
- êêêêè 1174
- #êêêêè──────
- êêêêè1467.5
- Ç B
- 4
- êêêëMultiplyë 9.5
- êêêêêèx .46
- #êêêêêè─────
-
- ê A)ï53.7ê B)ï56.7ê C)ï4.37ê D)ïå
-
- #üêêêêÄ
- êêêêë 9.5
- êêêêè x .46
- #êêêêè ─────
- êêêêë 570
- êêêêë380
- #êêêêè──────
- êêêêè 4.370
- Ç C
- 5
- êêêèMultiplyë43.7
- êêêêê x .96
- #êêêêê ─────
-
- ê A)ï41.952ë B)ï428.52ë C)ï42.852ë D)ïå
-
- #üêêêë ìÅ
- êêêêë43.7
- êêêêè x .96
- #êêêêè ─────
- êêêêë2622
- êêêêè 3933
- #êêêêè──────
- êêêêè41.952
- Ç A
- 6
- êêêè Multiplyë1.35
- êêêêêïx .38
- #êêêêêï─────
-
- ê A)ï51.3ê B)ï5.23ê C)ï.5130êD)ïå
-
- #üêêêë ì Å
- êêêêë1.35
- êêêêè x .38
- #êêêêè ─────
- êêêêë1080
- êêêêë405
- #êêêêè ─────
- êêêêè .5130
- Ç C
- 7
- êêêè Multiplyë.693
- êêêêêïx 7.3
- #êêêêêï─────
-
- ê A)ï50.859ë B)ï5.0589ë C)ï6.8589ë D)ïå
-
- #üêêêêì
- êêêêë.693
- êêêêè x 7.3
- #êêêêè ─────
- êêêêë2079
- êêêêè 4851
- #êêêêè ─────
- êêêêè5.0589
- Ç B
- # 8êêêêïÉì
- êêêè Multiplyë.473
- êêêêêïxï48
- #êêêêêï─────
-
- ê A)ï22.704ë B)ï21.834ë C)ï21.854ë D)ïå
-
- #üêêêêÉì
- êêêêë.473
- êêêêè xï48
- #êêêêè ─────
- êêêêë3734
- êêêêè 1892
- #êêêêè ─────
- êêêêè22.704
- Ç A
- 9
- êêêè Multiplyè 4.365
- êêêêê xï.26
- #êêêêê ──────
-
- ê A)ï3.4789ë B)ï26.829ë C)ï1.1349ë D)ïå
-
- #üêêêë ì ÄÄ
- êêêêë4.365
- êêêêè xï.26
- #êêêêè ──────
- êêêêë26190
- êêêêë8730
- #êêêêè ──────
- êêêêè1.13490
- Ç C
- 10
- êêêè Multiplyè 1.009
- êêêêê x .057
- #êêêêê ──────
-
- ê A)ï.57513ë B)ï.057513ëC)ï5.7513ë D)ïå
-
- #üêêêêïæ
- êêêêë1.009
- êêêêè x .057
- #êêêêè ──────
- êêêêë 7063
- êêêêë5045
- #êêêêè ──────
- êêêêè.057513
- Ç B
- 11è Bill bought 5 shirts for $23.20 each.ïWhat was the total
- êêcost of the shirts?
-
-
-
- ê A)ï$116.00ëB)ï$96.00ë C)ï$86.00ë D)ïå
-
- #üêêêë îî
- êêêêè$ 23.20
- êêêêïxë 5
- #êêêêè───────
- êêêêè$116.00
-
-
- Ç A
- 12è If 1 gallon of water weighs 8.34 pounds, how much will
- êê5 gallons weigh?
-
-
- ëA)ï45.7 poundsè B)ï31.7 poundsè C)ï41.7 poundsè D)ïå
-
- #üêêêêî ì
- êêêêë 8.34
- êêêêè xè 5
- #êêêêè ──────
- êêêêë41.70
-
-
- Ç C
- 13è What is the cost of a 6.45 pound roast if the cost per
- êêpound is $3.35?
-
-
- êïA)ï$21.60ëB)ï$18.95ëC)ï$17.83ëD)ïå
-
- #üêêêêì ì
- êêêêë 6.45
- êêêêè x 3.35
- #êêêêè ──────
- êêêêë 3225
- êêêêë1935
- êêêêè 1935
- #êêêêè ──────
- êêêêï$21.6075
- Ç A
- 14è John earns $7.20 per hour.ïWhat is he paid if he works
- êê48.5 hours?
-
- êïA)ï$333.20è B)ï$349.20è C)ï$320.20è D)ïå
-
- #üêêêêîî
- êêêêë 48.5
- êêêêè x 7.20
- #êêêêè ──────
- êêêêë 9700
- êêêêè 3395
- #êêêêï────────
- êêêêï$349.200
-
- Ç B
-
-