用简便方法计算(最好用递等式回答)
9÷0.12525.25×0.65×4÷0.650.93×1.016.24-3.34-2.660.485×102-48.54.4+4.4×12+13×5.6快,急!!!!...
9÷0.125 25.25×0.65×4÷0.65 0.93×1.01 6.24-3.34-2.66 0.485×102-48.5
4.4+4.4×12+13×5.6
快,急!!!!!!!!!!! 展开
4.4+4.4×12+13×5.6
快,急!!!!!!!!!!! 展开
3个回答
展开全部
9÷0.125
=9*8
=72
25.25×0.65×4÷0.65
=25.25×4×(0.65÷0.65)
=25.25×4
=101
0.93×1.01
=(1-0.07)×(1+0.01)
=1-0.07+0.01-0.0007
=0.9393
6.24-3.34-2.66
=6.24-(3.34+2.66)
=6.24-6
=0.24
0.485×102-48.5
=48.5×1.02-48.5×1
=48.5×(1.02-1)
=48.5×0.02
=0.97
4.4+4.4×12+13×5.6
=4.4×(1+12)+5.6×13
=4.4×13+5.6×13
=(4.4+5.6)×13
=10×13
=130
=9*8
=72
25.25×0.65×4÷0.65
=25.25×4×(0.65÷0.65)
=25.25×4
=101
0.93×1.01
=(1-0.07)×(1+0.01)
=1-0.07+0.01-0.0007
=0.9393
6.24-3.34-2.66
=6.24-(3.34+2.66)
=6.24-6
=0.24
0.485×102-48.5
=48.5×1.02-48.5×1
=48.5×(1.02-1)
=48.5×0.02
=0.97
4.4+4.4×12+13×5.6
=4.4×(1+12)+5.6×13
=4.4×13+5.6×13
=(4.4+5.6)×13
=10×13
=130
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