题目内容
简便计算
| 7×250×4= | 137+89-37+11= | 36×250= | 123-17-83= |
(1)7×250×4,
=7×(250×4),
=7×1000,
=7000;
(2)137+89-37+11,
=(137-37)+(89+11),
=100+100,
=200;
(3)36×250,
=9×(4×250),
=9×100,
=900;
(4)123-17-83,
=123-(17+83),
=127-100,
=27.
=7×(250×4),
=7×1000,
=7000;
(2)137+89-37+11,
=(137-37)+(89+11),
=100+100,
=200;
(3)36×250,
=9×(4×250),
=9×100,
=900;
(4)123-17-83,
=123-(17+83),
=127-100,
=27.
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