有理数的乘法计算题 急12.5*(-13.5)*(-40)*20-1-(-11/2)*(-4/11)-3.14*35.2+6.28*(-23.3)-1.57*36.41.6*(-9/5)*(-2.5)*(-3/8)-45.75*23/9+(-35.25)*(-23/9)+10.5*(-67/9)注意:“*”是乘号!
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![有理数的乘法计算题 急12.5*(-13.5)*(-40)*20-1-(-11/2)*(-4/11)-3.14*35.2+6.28*(-23.3)-1.57*36.41.6*(-9/5)*(-2.5)*(-3/8)-45.75*23/9+(-35.25)*(-23/9)+10.5*(-67/9)注意:“*”是乘号!](/uploads/image/z/448022-38-2.jpg?t=%E6%9C%89%E7%90%86%E6%95%B0%E7%9A%84%E4%B9%98%E6%B3%95%E8%AE%A1%E7%AE%97%E9%A2%98+%E6%80%A512.5%2A%EF%BC%88-13.5%EF%BC%89%2A%EF%BC%88-40%EF%BC%89%2A20-1-%EF%BC%88-11%2F2%EF%BC%89%2A%EF%BC%88-4%2F11%EF%BC%89-3.14%2A35.2%2B6.28%2A%EF%BC%88-23.3%EF%BC%89-1.57%2A36.41.6%2A%EF%BC%88-9%2F5%EF%BC%89%2A%EF%BC%88-2.5%EF%BC%89%2A%EF%BC%88-3%2F8%EF%BC%89-45.75%2A23%2F9%2B%EF%BC%88-35.25%EF%BC%89%2A%EF%BC%88-23%2F9%EF%BC%89%2B10.5%2A%EF%BC%88-67%2F9%EF%BC%89%E6%B3%A8%E6%84%8F%EF%BC%9A%E2%80%9C%2A%E2%80%9D%E6%98%AF%E4%B9%98%E5%8F%B7%21)
有理数的乘法计算题 急12.5*(-13.5)*(-40)*20-1-(-11/2)*(-4/11)-3.14*35.2+6.28*(-23.3)-1.57*36.41.6*(-9/5)*(-2.5)*(-3/8)-45.75*23/9+(-35.25)*(-23/9)+10.5*(-67/9)注意:“*”是乘号!
有理数的乘法计算题 急
12.5*(-13.5)*(-40)*20
-1-(-11/2)*(-4/11)
-3.14*35.2+6.28*(-23.3)-1.57*36.4
1.6*(-9/5)*(-2.5)*(-3/8)
-45.75*23/9+(-35.25)*(-23/9)+10.5*(-67/9)
注意:“*”是乘号!
有理数的乘法计算题 急12.5*(-13.5)*(-40)*20-1-(-11/2)*(-4/11)-3.14*35.2+6.28*(-23.3)-1.57*36.41.6*(-9/5)*(-2.5)*(-3/8)-45.75*23/9+(-35.25)*(-23/9)+10.5*(-67/9)注意:“*”是乘号!
12.5*(-13.5)*(-40)*20
=(12.5*20)*40*13.5
=250*40*13.5
=10000*13.5
=135000
-1-(-11/2)*(-4/11)
=-1-(11/2)*(4/11)
=-1-2
=-3
-3.14*35.2+6.28*(-23.3)-1.57*36.4
=-3.14*35.2+2*3.14*(-23.3)-3.14*0.5*36.4*
=-3.14(35.2+46.6+18.2)
=-3.14*100
=-314
1.6*(-9/5)*(-2.5)*(-3/8)
=-1.6*2.5*(9/5*3/8)
=-4*27/40
=-27/10
-45.75*23/9+(-35.25)*(-23/9)+10.5*(-67/9)
=(23/9)(-45.75+35.25)-10.5*(67/9)
=(23/9)*(-10.5)-10.5*(67/9)
=-10.5*(23/9+67/9)
=-10.5*90/9
=-105