12.4-22.78÷3.4怎简算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/10 20:00:10
再答:这个没简算
9.07-22.78÷3.4=9.07-6.7=2.37
此题要区分除和除以,还有最起码的逻辑运算:先乘除后加减.应理解为12.4-(3.4/22.78)=12.25
10.05-22.78/3.4=10.05-6.7=3.35
12.4-12.4*0.25=3.1*4-3.1*4*0.25=3.1*4-3.1*(4*0.25)=3.1*4-3.1=3.1*(4-1)=3.1*3=9.30.25*9+1÷8=(0.25*9*8
12.68-22.78÷3.4=12.68-6.7=5.98再问:哦。谢谢,但是要是简便方法啊?再答:12.68-22.78÷3.4=10+2.68-22.78÷3.4=34÷3.4+2.68-22.
9.07-22.78÷3.4=9.07-227.8÷34=9.07-6.7=2.37
9.07-22.78÷3.4=9.07-227.8÷34=9.07-6.7=2.37再问:没有简算再答:可以口算的题目,没办法再简便了
(1)9.07-22.78÷3.4,=9.07-6.7,=2.37;(2)12.6÷0.28+37.6,=45+37.6,=82.6.
12.4-22.78÷3.4=12.4-(20.4+2.38)÷3.4=12.4-(20.4÷3.4+2.38÷3.4)=12.4-(6+0.7)=12.4-6.7=5.7
0.98×101=0.98*(100+1)=0.98*100+0.98=98+0.98=98.989.07-22.78÷3.4=9.07-6.7=2.370.125×3.2×0.25=0.125*8*
=9.07-6.7=2.37
9.07-22.78/3.4=9.07-6.7=2.37
22.78÷3.4=6.7
10.05-22.78÷3.4=10.05-6.7=3.35
23*99=23*(100-1)=23*100-23=2300-23=2277
9.7-22.78÷3.4+3.7=9.7-6.7+3.7=3+3.7=6.7
9.207-22.78/3.4=9.207-(23.8-1.02)/3.4=9.207-23.8/3.4+1.02/3.4=9.207-7+0.3=2.507
没有简便方法再答:9.07-6.7再答:2.37