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6.25x2.8+37.5x0.28简算

6.25x2.8+37.5x0.28 =6.25x2.8+3.75x2.8 =(6.25+3.75)

6.25x8.4+37.5x0.84简便计算 =6.25x8.4+3.75x8.4 =(6.25

6.25×0.16+ 3.7x0.84+ 25.5x0.084 =1+3.108+2.142 =

=6.25x0.16+0.84x(3.7+2.55) =6.25x(0.16+0.84) =6.25

6.72-2.3÷0.5×0.8 =6.72-2.3÷1/2×0.8 =6.72-2.3×2×0

原式 =13.5x(6.25+1.75) =13.5x8 =10x8+3x8+0.5x8 =

6.25×0.56+5/8×3.4+5×1/8 =0.625×5.6+0.625×3.4+0.62

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