题目内容
脱式计算.
920-150×4 | 180×5÷6 | (53+37)÷9 | 735÷7÷3 |
分析:(1)先算乘法,再算减法;
(2)调整运算顺序,即180×5÷6,然后从左到右依次计算;
(3)先算括号内心的,再算括号内外的;
(4)从左到右依次计算.
(2)调整运算顺序,即180×5÷6,然后从左到右依次计算;
(3)先算括号内心的,再算括号内外的;
(4)从左到右依次计算.
解答:解:(1)920-150×4,
=920-600,
=320;
(2)180×5÷6,
=180÷6×5,
=30×5,
=150;
(3)(53+37)÷9,
=90÷9,
=10;
(4)735÷7÷3,
=105÷3,
=35.
=920-600,
=320;
(2)180×5÷6,
=180÷6×5,
=30×5,
=150;
(3)(53+37)÷9,
=90÷9,
=10;
(4)735÷7÷3,
=105÷3,
=35.
点评:此题主要考整数的四则混合运算的运算顺序,以及运用运算技巧,灵活简算.
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