脱式计算(能简算的要简算)4.36×12.5×8;15.2÷0.25÷4;0.46×1.9+0.54×1.9;3.6÷[(1.2-0.4)×0.5].
(1)4.36×12.5×8
=4.36×(12.5×8)
=4.36×100
=436;
(2)15.2÷0.25÷4
=15.2÷(0.25×4)
=15.2÷1
=15.2;
(3)0.46×1.9+0.54×1.9
=(0.46+0.54)×1.9
=1×1.9
=1.9;
(4)3.6÷[(1.2-0.4)×0.5]
=3.6÷[0.8×0.5]
=3.6÷0.4
=9.
=4.36×(12.5×8)
=4.36×100
=436;
(2)15.2÷0.25÷4
=15.2÷(0.25×4)
=15.2÷1
=15.2;
(3)0.46×1.9+0.54×1.9
=(0.46+0.54)×1.9
=1×1.9
=1.9;
(4)3.6÷[(1.2-0.4)×0.5]
=3.6÷[0.8×0.5]
=3.6÷0.4
=9.
温馨提示:答案为网友推荐,仅供参考
第1个回答 2015-10-13
先算12.5*8=100*4.36=436
15.2/0.25/4=15.2*(0.25*4)=12.5