题目内容
脱式计算.
81×7÷9 | 672÷(2×3) | 700-700÷5 | 920÷8+294 | 103+400-365. |
分析:(1)从左向右进行计算即可,
(2)先算小括号里的乘法,再算括号外的除法,
(3)先算除法,再算减法,
(4)先算除法,再算加法,
(5)从左向右进行计算即可.
(2)先算小括号里的乘法,再算括号外的除法,
(3)先算除法,再算减法,
(4)先算除法,再算加法,
(5)从左向右进行计算即可.
解答:解:(1)81×7÷9,
=567÷9,
=63;
(2)672÷(2×3),
=672÷6,
=112;
(3)700-700÷5,
=700-140,
=560;
(4)920÷8+294,
=115+294,
=409;
(5)103+400-365,
=503-365,
=138.
=567÷9,
=63;
(2)672÷(2×3),
=672÷6,
=112;
(3)700-700÷5,
=700-140,
=560;
(4)920÷8+294,
=115+294,
=409;
(5)103+400-365,
=503-365,
=138.
点评:此题考查了整数四则混合运算的顺序,注意有小括号的运算.
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