
递等式计算.(能用简便算法的用简便方法计算) 1.5×105; 2.33×0.5×4 2.05÷0.82+33.6
递等式计算.(能用简便算法的用简便方法计算)1.5×105;2.33×0.5×42.05÷0.82+33.69.07-22.78÷3.4....
递等式计算.(能用简便算法的用简便方法计算) 1.5×105; 2.33×0.5×4 2.05÷0.82+33.6 9.07-22.78÷3.4.
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(1)1.5×105
=1.5×(100+5),
=1.5×100+1.5×5,
=150+7.5,
=157.5;
(2)2.33×0.5×4
=2.33×(0.5×4),
=2.33×2,
=4.66;
(3)2.05÷0.82+33.6
=2.5+33.6,
=36.1;
(4)9.07-22.78÷3.4
=9.07-6.7,
=2.37.
=1.5×(100+5),
=1.5×100+1.5×5,
=150+7.5,
=157.5;
(2)2.33×0.5×4
=2.33×(0.5×4),
=2.33×2,
=4.66;
(3)2.05÷0.82+33.6
=2.5+33.6,
=36.1;
(4)9.07-22.78÷3.4
=9.07-6.7,
=2.37.
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