简便计算:(1)7.2÷0.625-2.8×0.625 (2)32.4÷4-8.5×0.4 (3)(10-10.8÷1.5)×5.7

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/02 22:07:44
简便计算:(1)7.2÷0.625-2.8×0.625 (2)32.4÷4-8.5×0.4 (3)(10-10.8÷1.5)×5.7
x 0W&&dgEeRPGcn,( Rg$ uݻgۦrqpB+Еtz G&@ %PBfNL%"y}q ]5-f5~ע`N;i'S/)\JViW${BI` "IR}2!D3Nʪb-7m>cB

简便计算:(1)7.2÷0.625-2.8×0.625 (2)32.4÷4-8.5×0.4 (3)(10-10.8÷1.5)×5.7
简便计算:(1)7.2÷0.625-2.8×0.625 (2)32.4÷4-8.5×0.4 (3)(10-10.8÷1.5)×5.7

简便计算:(1)7.2÷0.625-2.8×0.625 (2)32.4÷4-8.5×0.4 (3)(10-10.8÷1.5)×5.7
(1)7.2÷0.625-2.8×0.625 =0.625(7.2-2.8)=5=5/8*22/5=11/4
(2)32.4÷4-8.5×0.4=(32+0.4)÷4-(7.5+1)×0.4=8+0.1-3-0.4=5.7
(3)(10-10.8÷1.5)×5.7=(10-(10.5+0.3))×5.7=399/25