题目内容
脱式计算
8×7-30
327+282+356
48-18÷6
2×(92-84)
8×7-30
327+282+356
48-18÷6
2×(92-84)
分析:(1)先算乘法,再算减法;
(2)从左往右依次计算;
(3)先算除法,再算减法;
(4)先算括号内的,再算括号外的.
(2)从左往右依次计算;
(3)先算除法,再算减法;
(4)先算括号内的,再算括号外的.
解答:解:(1)8×7-30,
=56-30,
=26;
(2)327+282+356,
=609+356,
=965;
(3)48-18÷6,
=48-3,
=45;
(4)2×(92-84),
=2×8,
=16.
=56-30,
=26;
(2)327+282+356,
=609+356,
=965;
(3)48-18÷6,
=48-3,
=45;
(4)2×(92-84),
=2×8,
=16.
点评:此题主要考查整数的四则混合运算的运算顺序和应用运算定律进行简便计算.
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