忙碌枉然
高粉答主
2020-06-17
·
忙忙碌碌也是枉然-赵文才
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▲5x4.6x0.2
=5x0.2x4.6
=1x4.6
=4.6
▲8.79x99+8.79
=8.79x(99+1)
=8.79x100
=879
▲10-0.46-0.54
=10-(0.46+0.54)
=10-1
=9
▲4x0.45+7.2
=1.8+7.2
=9
▲1.01x7.9
=(1+0.01)x7.9
=7.9+0.079
=7.979
▲2.35x0.15-0.15x0.35
=0.15x(2.35-0.35)
=0.15x2
=0.3
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