64.2×8加0.642×1200简便算

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64.2×8加0.642×1200简便算

64.2×8加0.642×1200简便算
64.2×8加0.642×1200简便算

64.2×8加0.642×1200简便算
64.2×8+0.642×1200
=64.2×8+64.2×12
=64.2x(8+12)
=64.2x20
=1284

64.2×8加0.642×1200
=64.2×8+64.2×12
=64.2×(8+12)
=64.2×20
=1284

64.2×8+0.642×1200
=64.2×8+64.2×12
=64.2×(8+12)
=64.2×20
=1284

64.2*8+0.642*100*12=64.2*(12+8)=64.2*20=132

64.2×8﹢0.642×1200
=64.2×8+64.2×12
=64.2×(8+12)
=64.2×20
=1284