脱式计算÷3 200-126÷6 25+75÷3505÷5×4 618÷824÷4÷2672÷3÷4 224÷7÷8 504÷9÷7
脱式计算 (168-54)÷3 | 200-126÷6 | 25+75÷3 |
505÷5×4 | 618÷(2×3) | 824÷4÷2 |
672÷3÷4 | 224÷7÷8 | 504÷9÷7 |
(2)先算除法,再算减法;
(3)先算除法,再算加法;
(4)按照从左到右的顺序计算;
(5)先算小括号里面的乘法,再算括号外的除法;
(6)(7)(8)(9)按照从左到右的顺序计算. 解答: 解:(1)(168-54)÷3
=114÷3
=38;
(2)200-126÷6
=200-21
=179;
(3)25+75÷3
=25+25
=50;
(4)505÷5×4
=101×4
=404;
(5)618÷(2×3)
=618÷6
=103;
(6)824÷4÷2
=206÷2
=103;
(7)672÷3÷4
=224÷4
=56;
(8)224÷7÷8
=32÷8
=4;
(9)504÷9÷7
=56÷7
=8. 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.