数学
3道简便运算带答案

2019-05-27

3道简便运算带答案
优质解答
1.06×2.5×4
=1.06×(2.5×4)
=1.06*10
=10.6
14.5*7.3+1.45*27
=14.5*7.3+14.5*2.7
=14.5*(7.3+2.7)
=14.5*10
=145
1.25÷4×0.8
=1.25×0.8÷4
=1÷4
=0.25
1.06×2.5×4
=1.06×(2.5×4)
=1.06*10
=10.6
14.5*7.3+1.45*27
=14.5*7.3+14.5*2.7
=14.5*(7.3+2.7)
=14.5*10
=145
1.25÷4×0.8
=1.25×0.8÷4
=1÷4
=0.25
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