题目内容
脱式计算 (1)7×8+23 |
(2)(51-23)÷7 | (3)48+4×6 |
(4)63÷(36-29) | (5)86-6×9 | (6)(36+45)÷9. |
分析:本题根据四则混合运算的运算顺序计算即可:先算乘除,再算加减,有括号的要先算括号里面的.
解答:解:(1)7×8+23
=56+23,
=79;
(2)(51-23)÷7
=28÷7,
=4;
(3)48+4×6
=48+24,
=72;
(4)63÷(36-29)
=63÷7,
=9;
(5)86-6×9
=86-54,
=32;
(6)(36+45)÷9
=81÷9,
=9.
=56+23,
=79;
(2)(51-23)÷7
=28÷7,
=4;
(3)48+4×6
=48+24,
=72;
(4)63÷(36-29)
=63÷7,
=9;
(5)86-6×9
=86-54,
=32;
(6)(36+45)÷9
=81÷9,
=9.
点评:在完成脱式计算题目时,要注意要计算过程逐步写出,中间不要有跳跃.
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