2.8×95+28×0.5简便运算

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2.8×95+28×0.5简便运算
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2.8×95+28×0.5简便运算
2.8×95+28×0.5简便运算

2.8×95+28×0.5简便运算
2.8×95+28×0.5
=2.8×95+2.8×5
=2.8×(95+5)
=2.8×100
=280

2.8×95+28×0.5
=2.8×95+2.8×5
=2.8×(95+5)
=2.8x100
=280

2.8*95+28*0.5=2.8(95+10*0.5)=2.8(95+5)=2.8*100=280

2.8×95+28×0.5
=2.8×95+2.8×5
=2.8×(95+5)
=2.8×100
=280