计算题(简便方法)①12.6×7.6×2.32÷1.9÷1.4÷2.9②6.66×1.2+3.33×7.6③23.5×5.66-23.4×5.67④1.2÷﹙1.2÷2.3﹚÷﹙2.3÷3.4﹚÷﹙3.4÷4.5﹚
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 13:50:14
![计算题(简便方法)①12.6×7.6×2.32÷1.9÷1.4÷2.9②6.66×1.2+3.33×7.6③23.5×5.66-23.4×5.67④1.2÷﹙1.2÷2.3﹚÷﹙2.3÷3.4﹚÷﹙3.4÷4.5﹚](/uploads/image/z/105332-68-2.jpg?t=%E8%AE%A1%E7%AE%97%E9%A2%98%EF%BC%88%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%EF%BC%89%E2%91%A012.6%C3%977.6%C3%972.32%C3%B71.9%C3%B71.4%C3%B72.9%E2%91%A16.66%C3%971.2%EF%BC%8B3.33%C3%977.6%E2%91%A223.5%C3%975.66%EF%BC%8D23.4%C3%975.67%E2%91%A31.2%C3%B7%EF%B9%991.2%C3%B72.3%EF%B9%9A%C3%B7%EF%B9%992.3%C3%B73.4%EF%B9%9A%C3%B7%EF%B9%993.4%C3%B74.5%EF%B9%9A)
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计算题(简便方法)①12.6×7.6×2.32÷1.9÷1.4÷2.9②6.66×1.2+3.33×7.6③23.5×5.66-23.4×5.67④1.2÷﹙1.2÷2.3﹚÷﹙2.3÷3.4﹚÷﹙3.4÷4.5﹚
计算题(简便方法)
①12.6×7.6×2.32÷1.9÷1.4÷2.9
②6.66×1.2+3.33×7.6
③23.5×5.66-23.4×5.67
④1.2÷﹙1.2÷2.3﹚÷﹙2.3÷3.4﹚÷﹙3.4÷4.5﹚
计算题(简便方法)①12.6×7.6×2.32÷1.9÷1.4÷2.9②6.66×1.2+3.33×7.6③23.5×5.66-23.4×5.67④1.2÷﹙1.2÷2.3﹚÷﹙2.3÷3.4﹚÷﹙3.4÷4.5﹚
①12.6×7.6×2.32÷1.9÷1.4÷2.9
=12.6/1.4*(7.6/1.9)*(2.32/2.9)
=9*4*0.8
=28.8
②6.66×1.2+3.33×7.6
=3.33(2.4+7.6)
=3.33*10
=33.3
③23.5×5.66-23.4×5.67
=23.5*5.66-(23.5-0.1)(5.66+0.01)
=23.5*5.66-23.5*5.66-0.235+0.566+0.001
=0.332
④1.2÷﹙1.2÷2.3﹚÷﹙2.3÷3.4﹚÷﹙3.4÷4.5﹚
=1*2.3/(2.3/3.4)/(3.4/4.5)
=3.4/(3.4/4.5)
=4.5