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﹚_百度作业帮
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÷2.9②6.66×1.2+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=28.8②6.66×1.2+3.33×7.6=3.33(2.4+7.6)=3.33*10=33.3③23.5×5.66-23.4×5.67=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=0.332④1.2÷﹙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)=4.58.32×9.9+0.823这个式孑用简便算法怎么算?_百度作业帮
8.32×9.9+0.823这个式孑用简便算法怎么算?
8.32×9.9+0.823这个式孑用简便算法怎么算?
8.32×9.9+0.823=8.32*(10-0.1)+0.823=83.2-0.832+0.823=83.2-(0.832-0.823)=83.2-0.009=83.191(180°-90°32’)/2+19°23’32”×3怎么计算_百度作业帮
(180°-90°32’)/2+19°23’32”×3怎么计算
(180°-90°32’)/2+19°23’32”×3怎么计算
(180°-90°32’)/2+19°23’32”×3=(89°28’)/2+57°69’96”=44.5°14’+57°70’36”=44°44’+58°10’36”=102°54’36”用简便方法计算:46乘28加92乘32加23乘16_百度作业帮
用简便方法计算:46乘28加92乘32加23乘16
用简便方法计算:46乘28加92乘32加23乘16
=23×2×28+23×4×32+23×16=23×56+23×128+23×16=23×(56+128+16)=23×200=4600}