0.666×0.7×0.222×0.9怎么简便运算
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0.666×0.7×0.222×0.9怎么简便运算0.666×0.7×0.222×0.9怎么简便运算0.666×0.7×0.222×0.9怎么简便运算“0.666×0.7×0.222×0.9”应该是“
0.666×0.7×0.222×0.9怎么简便运算
0.666×0.7×0.222×0.9怎么简便运算
0.666×0.7×0.222×0.9怎么简便运算
“0.666×0.7×0.222×0.9”应该是“0.666×0.7+0.222×0.9”吧,否则无法简算
0.666×0.7+0.222×0.9
=（0.222×3）×0.7+0.222×0.9
=0.222×（3×0.7）+0.222×0.9
=0.222×2.1+0.222×0.9
=0.222×（2.1+0.9）
=0.222×3
=0.666
0.666×0.7×0.222×0.9怎么简便运算
0.666×0.7×0.222×0.9怎么简便运算
0.888×0.9+0.222×6.4 简便运算
0.7(x+0.9)=42
比较0.7^0.8,0.8^0.9的大小
1.25*0.7*0.9*0.8简便运算
10-0.1-0.3-0.5-0.7-0.9求巧算
0.7(X+0.9)=42 怎么计算?
0.1+0.3+0.5+0.7+0.9+0.11.+0.99
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0.1 +03 +0.5 +0.7+ 0.9=( )×(
12.5×8.8×0.7怎米简便计算?
0.222...是有理数吗
1/3+2/3=1,1/3=0.333·· 2/3=0.666·· 0.3·+0.6``=0.9````` 这是为什么呢?
简算：0.1+0.3+0.5+0.7+0.9+0.11+0.13+0.15+...+0.99
巧算:0.1+0.2+0.3+0.4+0.5+0.6+0.7+0.8+0.9
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