题目内容
脱式计算. 96×4+372 |
835-29×8 | (420-370)×9 |
160+64÷8 | 385×4-780 | 2010×(392-388) |
分析:(1)先算乘法,再算加法;
(2)先算乘法,再算减法;
(3)先算减法,再算乘法;
(4)先算除法,再算加法;
(5)先算乘法,再算减法;
(6)先算减法,再算乘法.
(2)先算乘法,再算减法;
(3)先算减法,再算乘法;
(4)先算除法,再算加法;
(5)先算乘法,再算减法;
(6)先算减法,再算乘法.
解答:解:(1)96×4+372
=384+372
=756;
(2)835-29×8
=835-232
=603;
(3)(420-370)×9
=50×9
=450;
(4)160+64÷8
=160+8
=168;
(5)385×4-780
=1540-780
=760;
(6)2010×(392-388)
=2010×4
=8040.
=384+372
=756;
(2)835-29×8
=835-232
=603;
(3)(420-370)×9
=50×9
=450;
(4)160+64÷8
=160+8
=168;
(5)385×4-780
=1540-780
=760;
(6)2010×(392-388)
=2010×4
=8040.
点评:整数四则混合运算的关键是抓住运算顺序,正确按运算顺序计算即可.
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