计算题 答案

五年级8班 计算题(1)0.46×300=138(2)2.05×6=12.3(3)2.3×12=27.6(4)12.4×7=86.8(5)0.86×7=6.02(6)3.3×16=52.8(7)12.8×42=537.6(8)0.19×40=7.6(9)0.32×15=4.8(10)6.7×0.3=2.01(11)2.4×6.2=14.88(12)5.4×1.07=5.778(13)0.45×0.6=0.27(14)0.56×0.04=0.0224(15)3.7×4.6=17.02(16)0.48×1.5=0.72(17)0.29×0.07=0.0203(18)0.05×0.15=0.0075(19)2.4×1.1=2.64(20)2.4×1.5=3.6(21)1.2×0.4=0.48(22)0.11×1.2=0.132(23)0.35×1.2=0.42(24)3.2×2.5=8(25)1.2×0.9=1.08(26)56×1.3=72.8(27)2.6×1.08=2.808(28)1.8×23=41.4(29)7×0.86=6.02(30)0.37×0.4=0.148(31)0.6×0.39=0.234(32)1.06×25=26.5(33)27×0.43=11.61(34)0.08×0.14=0.0112(35)0.055×0.06=0.0033(36)0.39×2.9=1.131(37)0.18×8.45=1.521(38)0.58×0.08=0.0464(39)4.5×0.002=0.009(40)3.7×200=740(41)0.072×0.15=0.0108(42)1.7×0.45=0.765(43)6.5×10（口算）=65(44)3.78×100（口算）=378(45)82÷10（口算）=8.2(46)560÷100（口算）=5.6(47)4080÷1000（口算）=4.08(48)3.06×36=110.16(49)15.6×15=234(50)0.82×2=1.64(51)3.2×7=22.4(52)2.07×30=62.1(53)3.95×42=165.9(54)0.10×25（口算）=2.5(55)2.7×60=162(56)0.76×8.9=6.764(57)2.02×5.5=11.11(58)0.38×0.25=0.095(59)0.72×3.5=2.52(60)8.64×2.8=24.192(61)0.56×0.14=0.0784(62)0.76×8.9=6.764(63)3.14×0.08=0.2512(64)1.5×2.8=4.2(65)0.32×2.05=0.656(66)7.38×0.25=1.845(67)0.48×0.3=0.144(68)0.12×0.24=0.0288(69)0.45×4.8=2.16(70)48.7×0.06=2.922(71)0.98×1.02=0.9996(72)0.76×3.2=2.432(73)1.02×0.76=0.7752(74)0.033×3=0.099(75)0.56×1.07=0.5992(76)7.5×4.3=32.25(77)2.4×6.7=16.08(78)3.5×0.59=2.065(79)14.2×0.27=3.834(80)0.36×4.4=1.584(81)12.5×3.4×0.8=12.5×0.8×3.4=10×3.4=34(82)4.36×2.5+5.64×2.5=2.5×(4.36+5.64)=2.5×10=25(83)6.5×2.4+7.6×6.5=6.5×(2.4+7.6)=6.5×10=65(84)37×0.12×8=4.44×8=35.52(85)0.4×63×2.5=0.4×2.5×63=1×63=63(86)3.54×9.9+3.54×0.1=3.54×(9.9+0.1)=3.54×10=35.4(87)0.72×10.1=0.72×(10+0.1)=0.72×10+0.72×0.1=7.2+0.072=7.272(88)1.25×(8+0.8)=1.25×8+1.25×0.8=10+1=11(89)3.6+2.4×0.06=3.6+0.144=3.744(90)3.72×99+3.72=3.72×（99+1）=3.72×100=372(91)9.98×9.9=9.98×（10-0.1）=9.98×10-9.98×0.1=99.8-0.998=98.802(92)1.25×0.9×0.8=1.25×0.8×0.9=1×0.9=0.9(93)4×(6.3×2.5)=4×2.5×6.3=10×6.3=63(94)6.4×0.25×12.5=8×0.8×0.25×12.5=（8×0.25）×（0.8×12.5）=2×1=2(95)2.5×16.7-2.5×0.7=2.5×（16.7-0.7）=2.5×16=2.5×4×4=10×4=40(96)2.9×0.45+0.29×4.2+0.029×13=2.9×0.45+2.9×0.42+2.9×0.13=2.9×(0.45+0.42+0.13)=2.9×1=2.9(97)43×11.8+5.7×118=43×11.8+57×11.811.8×(43+57)=11.8×100=1180(98)0.36×1.5-0.45=0.54-0.45=0.09(99)0.38×0.23+0.62×0.23=0.23×(0.38+0.62)=0.23×1=0.23(100)0.8×9.58×1.25=0.8×1.25×9.58=1×9.58=9.58(101)5.45+0.65×4.7=5.45+3.055=8.505(102)25×10.7-25×0.725×(10.7-0.7)=25×10=250(103)6.4×99=6.4×（100-1）=6.4×100-6.4×1=640-6.4=633.6(104)0.65×202=0.65×（200+2）=0.65×200+0.65×2=130+1.3=131.3(105)0.25×4.78×4=0.25×4×4.78=1×4.78=4.78(106)2.5×(0.77×0.4)=2.5×0.4×0.77=1×0.77=0.77(107)7.2×8.4+2.8×8.4=8.4×（7.2+2.8）=8.4×10=84(108)0.034×0.5×0.6=0.034×（0.5×0.6）=0.034×0.3=0.0102(109)101×0.45=（100+1）×0.45=100×0.45+1×0.45=45+0.45=45.45(110)2.73×99=2.73×（100-1）=2.73×100-2.73×1=273-2.73=270.27(111)4.75×99+4.75=4.75×（99+1）=4.75×100=475(112)4.8×0.25=4×1.2×0.25=4×0.25×1.2=1×1.2=1.2(113)1.5×105=1.5×（100+5）=1.5×100+1.5×5=150+7.5=157.5(114)0.78×98=0.78×（100-2）=0.78×100-0.78×2=78-1.56=76.44(115)0.5×2.33×8=0.5×8×2.33=4×2.33=9.32(116)1.2×2.5+0.8×2.5=2.5×（1.2+0.8）=2.5×2=5(117)2.02×8.5=（2+0.02）×8.5=2×8.5+0.02×8.5=17+0.17=17.17(118)56×1.25=7×8×1.25=7×（8×1.25）=7×10=70(119)1.6×7.5×1.25=2×0.8×7.5×1.25=（2×7.5）×（0.8×1.25）=15×1=15(120)0.8×0.25×0.4×12.5=（0.8×12.5）×（0.25×0.4）=10×0.1=1(121)2.96×40=（3-0.04）×40=3×40-0.04×40=120-1.6=118.4(122)9.8×25=（10-0.2）×25=10×25-0.2×25=250-5=245(123)97×8.5=（100-3）×8.5=100×8.5-3×8.5=850-25.5=824.5(124)0.65×202=0.65×（200+2）=0.65×200+0.65×2=130+1.3=131.3(125)4.5×4×5.5×8=18×5.5×8=99×8=792(126)4.38×98=4.38×（100-2）=4.38×100-4.38×2=438-8.76=429.24(127)1.25×8.8=1.25×（8+0.8）=1.25×8+1.25×0.8=10+1=11(128)1.25×8×2.5×4=(1.25×8)×(2.5×4)=10×10=100(129)50.4×1.9-1.8=95.76-1.8=93.96(130)3.76×0.25+25.8=0.94+25.8=26.74(131)3.5+6.5×8.3=3.5+53.95=57.45(132)2.5+7.5×55=2.5+412.5=415(133)10.3-0.3×8.6=10.3-2.58=7.72(134)5.9×19.8-9.8=116.82-9.8=107.02(135)3.5×14.6-4.6×5=51.1-23=28.1(136)3.2×1.25×2.54×0.8×1.25×2.5=（4×2.5）×（1.25×0.8）=10×1=10(137)1.