9.7+99.7+999.7+9999.7+99999.7简算
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9.7+99.7+999.7+9999.7+99999.7简算9.7+99.7+999.7+9999.7+99999.7简算9.7+99.7+999.7+9999.7+99999.7简算9.7+99.
9.7+99.7+999.7+9999.7+99999.7简算
9.7+99.7+999.7+9999.7+99999.7
简算
9.7+99.7+999.7+9999.7+99999.7简算
9.7+99.7+999.7+9999.7+99999.7
=(10-0.3)+(100-0.3)+(1000-0.3)+(10000-0.3)+(100000-0.3)
=(10+100+1000+10000+100000)-(0.3+0.3+0.3+0.3+0.3)
=111110-1.5
=111108.5
9.7+99.7+999.7+9999.7+99999.7简算
0.7+9.7+99.7+999.7+…+999999999.7=?
简算9.7+99.7+999.7+9999.7+99999.7谢谢了,大神帮忙啊
0.7+9.7+99.7+999.7+9999.7+99999.7+999999.7+9999999.7+99999999.7+999999999.7=
9.8+99.8+999.8+9999.
9+99+999+9999...+99999999
0.8+9.8+99.8+999.8+9999.
1加9999.等于多少?
19.94+99.7×99.8
9.7*0.47+1.53*9.7-9.7(简便计算)
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999.6+999.7+999.8+1000.8+1000.7+1000.6简便运算
巧算 99.6+99.8+99.7+99.1
19.94+99.7×99.8 help me
99.9+99.8-99.7=?简便计算
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99.7%氧化锌中锌的含量是多少?
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