题目内容
脱式计算
45×(196-153) | (148+152)÷6 | 5.8-1.6+6.2 |
(4.3+6.7)×6 | 430-12×14 |
分析:(1)先算括号里的减法,再算括号外的乘法;
(2)先算括号里的加法,再算括号外的除法;
(3)先算5.8+6.2,再算减法;
(4)先算括号里的加法,再算括号外的乘法;
(5)先算乘法,再算减法.
(2)先算括号里的加法,再算括号外的除法;
(3)先算5.8+6.2,再算减法;
(4)先算括号里的加法,再算括号外的乘法;
(5)先算乘法,再算减法.
解答:解:(1)45×(196-153),
=45×43,
=1935;
(2)(148+152)÷6,
=300÷6,
=50;
(3)5.8-1.6+6.2,
=12-1.6,
=10.4;
(4)(4.3+6.7)×6,
=11×6,
=66;
(5)430-12×14,
=430-168,
=262.
=45×43,
=1935;
(2)(148+152)÷6,
=300÷6,
=50;
(3)5.8-1.6+6.2,
=12-1.6,
=10.4;
(4)(4.3+6.7)×6,
=11×6,
=66;
(5)430-12×14,
=430-168,
=262.
点评:考查了整数加减乘除四则混合运算顺序.
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