小刚和同学一共买了3枝钢笔,付给营业员20元,找回0.8元,平均每枝钢笔多少元?

2023-11-07 11:54:41

计算直接写出结果 2.5×40 = 100 1.25×80 = 100 9÷45 =0.2 10-0.1 =9.9 88÷0.88 =100 9.8+1.12 =10.92 6.1-0.01 =6.09 0.9×0.01 =0.009 8×0.45 = 0.5+1÷0.5 = 0.2×3÷0.2×3 = 0.3×0.14 =

好评回答

(20-0.8)÷3=6.4元

平均每支钢笔6.4元

2.5×40 = 100 

1.25×80 = 100 

9÷45 =0.2 

10-0.1 =9.9

 88÷0.88 =100

 9.8+1.12 =10击换渐者道.92

 6.1-0.01 =6.09

 0.9×0.01 =0.009 

8×0.45 = 3.6

0.5+1÷0.5 = 2.5

0.2×3÷0.2×3 =9

 0.3×0.14 =0.042