题目内容
| 怎样简便就怎样算. 189÷9+16×8 | 23×32+68×23 | 138×25×4 |
| (168-18)×(32+18) | 23000÷125÷8 | 199×47+47. |
(1)189÷9+16×8,
=21+128,
=149;
(2)23×32+68×23,
=23×(32+68),
=23×100,
=2300;
(3)138×25×4,
=138×(25×4),
=138×100,
=13800;
(4)(168-18)×(32+18),
=150×50,
=7500;
(5)23000÷125÷8,
=23000÷(125×8),
=23000÷1000,
=23;
(6)199×47+47,
=(199+1)×47,
=200×47,
=9400.
=21+128,
=149;
(2)23×32+68×23,
=23×(32+68),
=23×100,
=2300;
(3)138×25×4,
=138×(25×4),
=138×100,
=13800;
(4)(168-18)×(32+18),
=150×50,
=7500;
(5)23000÷125÷8,
=23000÷(125×8),
=23000÷1000,
=23;
(6)199×47+47,
=(199+1)×47,
=200×47,
=9400.
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