题目内容
脱式计算.
125×8×4 | 350×2-436 | (176+64)×6 |
(238+164)×9 | 800-300÷6 | 361+25×4. |
分析:依据四则混合运算的顺序计算:先算第二级运算,再算第一级运算,如果只含有同一级运算,按照从左到右顺序计算,有括号先算括号里面的.
解答:解:125×8×4,
=1000×4,
=4000,
350×2-436
=700-436,
=264;
(176+64)×6,
=240×6,
=1440;
(238+164)×9,
=402×9,
=3618;
800-300÷6,
=800-50,
=750;
361+25×4,
=361+100,
=461.
=1000×4,
=4000,
350×2-436
=700-436,
=264;
(176+64)×6,
=240×6,
=1440;
(238+164)×9,
=402×9,
=3618;
800-300÷6,
=800-50,
=750;
361+25×4,
=361+100,
=461.
点评:本题主要考查学生对于四则运算计算方法的掌握情况,注意运算的顺序以及计算结果的准确性.
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