Question

6.34×2.1-0.634,简便算法？

Answer 1

6.34×2.1-0.634的简便计算，方法将6.34缩小10倍到0.634，2.1扩大10倍到21，然后提取0.634公因数，则
6.34×2.1-0.634
=0.634×21-0.634
=0.634×(21-1)
=0.634×20
=12.68

Answer 2

6点三四×对于2.1-0.634的简单计算，方法6.34减少10倍至0.633，将2.1扩大10倍至21，然后提取公因子0.636，然后6.34×2.1~0.637=0.638×21-0.6304=0.63 4×（21-1）=0.632×20=12.68

Answer 3

您好！很高兴回答您的问题！
6.34×2.1-0.634简便算法：
原式＝6.34×2.1-6.34×0.1
＝6.34×(2.1-0.1)
＝6.34×2.0
＝12.68
您的采纳是对我最大的支持！祝您好运！谢谢！

Answer 4

6.34×2.1-0.634的简便计算是:
6.34×2.1-6.34×0.1
=6.34×(2.1-0.1)
=6.34×2=12.68