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简介:
五年级数学上册
简便计算常考题练专项训练
3.5×2.7-3.5×0.7
=3.5×(2.7-0.7)
=3.5×2
=7
(乘法分配率)
(32+5.6)÷0.8
=32÷0.8+5.6÷0.8
=40+7
=47
(除法的性质)
0.5÷0.6-0.5÷0.6
=(3.5-0.5)÷0.6
=3÷0.6
=5
(除法的性质)
4.9÷1.4
=4.9÷(7×0.2)
=4.9÷7÷0.2
=3.5
(拆数,除法的性质)
7÷0.25÷4
=7÷(0.25×4)
=7÷1
=7
(除法的性质)
7.35÷(7.35×0.25)
=7.35÷7.35÷0.25
=1÷0.25
=4
(除法的性质)