9.4-2.4x0.3简便计算

赫宋刘9592.4十2.4x9用简法计算答案 -
逯栋陈19233566627 ______ 2.4十2.4x9=2.4x(1十9)=2.4x10=24

赫宋刘959(2.87*9.4 - 9.4*1.87)*0.13的简便方法 -
逯栋陈19233566627 ______ 9.4X(2.87-1.87)X0.13 =9.4X1X0.13 =1.222

赫宋刘9592.4/0.3 - 2.4x0.3怎样用简便方法 -
逯栋陈19233566627 ______ 3.7加上2.4加上0.3怎样简便机算3.7加上2.4加上0.3=(3.7+0.3)+2.4=4+2.4=6.4

赫宋刘959(4.7+4.7x0.9)÷0.2简便计算 -
逯栋陈19233566627 ______ 原式=[4.7x(1+0.9)]x5=4.7x1.9x5=4.7x(2-0.1)x5=(9.4-0.47)x5=8.93x5=44.65

赫宋刘959(7.2+2.4)÷8 简便方法 -
逯栋陈19233566627 ______ (7.2+2.4)÷8=(7.2+2.4)x1/8=7/2x1/8+2.4x1/8=0.9+0.3=1.2

赫宋刘9594.8 - 2.4*4.2的简便算法 -
逯栋陈19233566627 ______ 4.8-2.4*4.2=2.4x2-2.4x4.2=2.4x(2-4.2)=2.4x(-2.2)=-2.4x(2+0.2)=-2.4x2-2.4x0.2=-4.8-0.48=-5.28

赫宋刘95910.8除0.4x+2x的和=0点3怎么解方程 -
逯栋陈19233566627 ______ 10.8÷(0.4x+2x)=0.310.8÷2.4x=0.32.4x = 10.8÷0.3 = 36 x = 36÷2.4 = 15

赫宋刘9595.3*2.4 1.2*9.4简便计算 -
逯栋陈19233566627 ______ 5.3*2.4 +1.2*9.4=5.3X2.4+2.4X4.7=2.4X(5.3+4.7)=2.4X10=24

赫宋刘9590.4*24.5*2.5简便计算 -
逯栋陈19233566627 ______ 用0.4先去乘以2.5等于1,再乘以24.5就得出结果是24.5,这样算简单点

赫宋刘9592.4Ⅹ3.5x65x0.24的简便运算 -
逯栋陈19233566627 ______ 2.4Ⅹ3.5x65x0.24=2.4Ⅹ3.5x6.5x2.4=2.4x10=24 望采纳