| 能简算的要简算: | ||||||
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(1) 19.28+1.82÷0.7
=19.28+2.6
=21.88 (2) 10.56×3.75﹣3.75×0.56
=(10.56﹣0.56)×3.75
=10×3.75
=37.5 (3)(71.2﹣71.2×0.9)÷0.25
=(1﹣0.9)×71.2÷
=7.12×4
=28.48 (4)14.53﹣(2.64+0.53)﹣1.36
=(14.53﹣0.53)﹣(2.64+1.36)
=14﹣4
=10
(5)13.5÷[(2﹣0.8)×4.5]
=13.5÷4.5×1.2
=3×1.2
=2.5
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