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简便计算 9.07".78除3.4

9.07-22.78÷3.4 =9.07-6.7 =2.37

=9.07-6.7 =2.37

=9.07×(1-3.4) =9.07×(-2.4) =9.07×(-2)+9.07×(-0.4) =-18.14-3.628 =-21.768

文具店有卖的,感觉对于纠正不认真、粗心、字迹潦草计算的孩子有效果的,但不建议长期使用。

22.78÷3.4 = 6.7能除尽,得到1位小数: 9.07-6.7 = 2.37

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9.07-22.78/3.4 =9.07-6.7 =2.37 不能简便

9.07-22.78÷3.4 =9.07-6.7 =2.37 没有简算,直接计算

=9+7/100-114/17 =9+7/100-(7-5/17) =(9-7)+(7/100+5/17) =2+(119+500)/1700 =2又619/1700

解: 9.07-22.78÷3.4 =9.07-227.8÷34 =9.07-6.7 =2.37

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