初一数学:有理数混合运算【急!在线等!好的加分 加运算过程】2又3/4-(-1.25)-1又3/8(-125)÷17+(+315)÷17-(-166)÷17-(-1/17)(-240)×(-5又1/5+7又3/8-2又8/15-1/2)[1又21/24-(3/8+1/16-3/4)×(-6
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![初一数学:有理数混合运算【急!在线等!好的加分 加运算过程】2又3/4-(-1.25)-1又3/8(-125)÷17+(+315)÷17-(-166)÷17-(-1/17)(-240)×(-5又1/5+7又3/8-2又8/15-1/2)[1又21/24-(3/8+1/16-3/4)×(-6](/uploads/image/z/5293966-22-6.jpg?t=%E5%88%9D%E4%B8%80%E6%95%B0%E5%AD%A6%EF%BC%9A%E6%9C%89%E7%90%86%E6%95%B0%E6%B7%B7%E5%90%88%E8%BF%90%E7%AE%97%E3%80%90%E6%80%A5%21%E5%9C%A8%E7%BA%BF%E7%AD%89%21%E5%A5%BD%E7%9A%84%E5%8A%A0%E5%88%86+%E5%8A%A0%E8%BF%90%E7%AE%97%E8%BF%87%E7%A8%8B%E3%80%912%E5%8F%883%2F4-%EF%BC%88-1.25%EF%BC%89-1%E5%8F%883%2F8%EF%BC%88-125%EF%BC%89%C3%B717%2B%EF%BC%88%2B315%EF%BC%89%C3%B717-%EF%BC%88-166%EF%BC%89%C3%B717-%EF%BC%88-1%2F17%EF%BC%89%EF%BC%88-240%EF%BC%89%C3%97%EF%BC%88-5%E5%8F%881%2F5%2B7%E5%8F%883%2F8-2%E5%8F%888%2F15-1%2F2%EF%BC%89%5B1%E5%8F%8821%2F24-%EF%BC%883%2F8%2B1%2F16-3%2F4%EF%BC%89%C3%97%EF%BC%88-6)
初一数学:有理数混合运算【急!在线等!好的加分 加运算过程】2又3/4-(-1.25)-1又3/8(-125)÷17+(+315)÷17-(-166)÷17-(-1/17)(-240)×(-5又1/5+7又3/8-2又8/15-1/2)[1又21/24-(3/8+1/16-3/4)×(-6
初一数学:有理数混合运算【急!在线等!好的加分 加运算过程】
2又3/4-(-1.25)-1又3/8
(-125)÷17+(+315)÷17-(-166)÷17-(-1/17)
(-240)×(-5又1/5+7又3/8-2又8/15-1/2)
[1又21/24-(3/8+1/16-3/4)×(-64)]÷5
-2.5×(-4.8)×(0.09)÷(-0.27)
(-1)-(1-1/2)÷3×[2-(-3)×(-3)]
虽然很快 可是你阅题了吗?【我这可是试卷订正= =要交的 还漏一题】
补充:5×|-3.2|×5/16+(-2)÷1/3×(-3)
(-2)×(-2)-(-3)×(-3)×1/6
——————————————————
-3×3-(-2)×(-2)×(-2)
(-81)÷2又1/4×(-4/9)÷(-16)
1÷(-2/7)×3/7
初一数学:有理数混合运算【急!在线等!好的加分 加运算过程】2又3/4-(-1.25)-1又3/8(-125)÷17+(+315)÷17-(-166)÷17-(-1/17)(-240)×(-5又1/5+7又3/8-2又8/15-1/2)[1又21/24-(3/8+1/16-3/4)×(-6
2又3/4-(-1.25)-1又3/8
=4-1又3/8
=2又5/8
(-240)×(-5又1/5+7又3/8-2又8/15-1/2)
=-240×(-8又7/30+7又3/8)
=240+56-90
=206
[1又21/24-(3/8+1/16-3/4)×(-64)]÷5
=【1又7/8+5/16×(-64)】÷5
=【15/8-20】÷5
=3/8-4
=3又5/8
-2.5×(-4.8)×(0.09)÷(-0.27)
=-2.5×(-4.8)×(-1/3)
=-2.5×1.6
=-4
(-1)-(1-1/2)÷3×[2-(-3)×(-3)]
=-1-(1/2)÷3×15
=-1-1/6×15
=-1-5/2
=-3又1/2