2.84×7.9+2.84×2+28.4×0.01的简便计算?
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这道题可以这样简算:
2.84×7.9+2.84×2+28.4×0.01
=2.84×7.9+2.84×2+2.84×0.1
=2.84×(7.9+2+0.1)
=2.84×10
=28.4
2.84×7.9+2.84×2+28.4×0.01
=2.84×7.9+2.84×2+2.84×0.1
=2.84×(7.9+2+0.1)
=2.84×10
=28.4
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解:2.84×7.9+2.84×2+28.4×0.01
=2.84×(7.9+2+0.1)
=2.84×(8+2)
=2.84×10
=28.4
请参考!
=2.84×(7.9+2+0.1)
=2.84×(8+2)
=2.84×10
=28.4
请参考!
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2.84×7.9+2.84×2+28.4×0.01=2.84×(7.9+2+0.1)=2.84×10=28.4
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2.84x7.9十2.84x2十28.4x0.01
=2.84x7.9十2.84x2+2.84x0.1
=2.84x(7.9+2+0.1)
=2.84x10
=28.4
=2.84x7.9十2.84x2+2.84x0.1
=2.84x(7.9+2+0.1)
=2.84x10
=28.4
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2.84*7.9+2.84*2+28.4*0.01
=2.84*7.9+2.84*2+2.84*10*0.01
=2.84*7.9+2.84*2+2.84*0.1
=2.84*(7.9+2+0.1)
=2.84*10
=28.4
=2.84*7.9+2.84*2+2.84*10*0.01
=2.84*7.9+2.84*2+2.84*0.1
=2.84*(7.9+2+0.1)
=2.84*10
=28.4
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