0.64*25*7.8+2.2这道题用简便方法应该怎么做
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![0.64*25*7.8+2.2这道题用简便方法应该怎么做](/uploads/image/z/430681-49-1.jpg?t=0.64%2A25%2A7.8%2B2.2%E8%BF%99%E9%81%93%E9%A2%98%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E5%81%9A)
0.64*25*7.8+2.2这道题用简便方法应该怎么做
0.64*25*7.8+2.2这道题用简便方法应该怎么做
0.64*25*7.8+2.2这道题用简便方法应该怎么做
0.64*25*7.8+2.2
=4×0.16×25×7.8+2.2
=(4×25)×0.16×7.8+2.2
=100×0.16×7.8+2.2
=16×7.8+2.2
=15×7.8+7.8+2.2
=15×(8-0.2)+10
=15×8-15×0.2+10
=120-3+10
=127
0.64+25+7.8+2.2
0.64×25×7.8+2.2
0.64×25×7.8+2.2 的简便运算
0.64*25*7.8+2.2这道题用简便方法应该怎么做
6.6×2.2+7.8×2.2+7.8×4.4简算
7.8+4.56+2.2
我要10道递等式计算题...0.64×25×7.8+2.2 2÷2.5+2.5÷2 194-64.8÷1.8×0.9 36.72÷4.25×9.9 5180-705×6 24÷2.4-2.5×0.8 (4121+2389)÷7 671×15-974 469×12+1492 405×(3213-3189)
15.37×7.8-9.37×7.8+15.84×2.2-9.84×2.2简便算
怎样简便就怎么算7.8-1.36+3.2-0.64
1、0.64*7.2+3.6*2.722、0.78*0.45*0.1/7.8/0.045
7.8x+2.2=15.6+2.2解放程
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0.78×78+7.8×2.2简便计算0.78×78+7.8×2.
7.8+4.87+2.2怎样简算?
2.2*125%+7.8/80% 简便计算
7.8-(9.6-2.2)简便运算
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15.2×7.8+2.2×15.2的简便算法