题目内容
脱式计算: ①4412÷4+204×6 | ②473-(473-95) | ③7362÷9×8 | ④7060-175×6 |
⑤624-128)÷4 | ⑥4015÷5-2190÷3 | ⑦6000÷8-57×6. |
解:①4412÷4+204×6,
=1103+1224,
=2327;
②473-(473-95),
=473-378,
=95;
③7362÷9×8,
=818×8,
=6544;
④7060-175×6,
=7060-1050,
=6010;
⑤(624-128)÷4,
=496÷4,
=124;
⑥4015÷5-2190÷3,
=803-730,
=73;
⑦6000÷8-57×6,
=750-342,
=408.
分析:①先同时运算除法和乘法,再算加法;
②先算小括号里面的减法,再算括号外的减法;
③按照从左到右的顺序计算;
④先算乘法,再算减法;
⑤先算小括号里面的减法,再算括号外的减法;
⑥先同时运算除法,再算减法;
⑦先同时运算除法和乘法,再算加法.
点评:本题考查了简单的四则混合运算,计算时先理清楚运算顺序,根据运算顺序逐步求解即可.
=1103+1224,
=2327;
②473-(473-95),
=473-378,
=95;
③7362÷9×8,
=818×8,
=6544;
④7060-175×6,
=7060-1050,
=6010;
⑤(624-128)÷4,
=496÷4,
=124;
⑥4015÷5-2190÷3,
=803-730,
=73;
⑦6000÷8-57×6,
=750-342,
=408.
分析:①先同时运算除法和乘法,再算加法;
②先算小括号里面的减法,再算括号外的减法;
③按照从左到右的顺序计算;
④先算乘法,再算减法;
⑤先算小括号里面的减法,再算括号外的减法;
⑥先同时运算除法,再算减法;
⑦先同时运算除法和乘法,再算加法.
点评:本题考查了简单的四则混合运算,计算时先理清楚运算顺序,根据运算顺序逐步求解即可.
练习册系列答案
相关题目