Question

1.25×64×80×5.5简便算法

Answer 1

1.25×64×80×5.5
=(1.25x8)x64x55
=10x64x(50+5)
=35200
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Answer 2

1.25×64×80×5.5
=(1.25×80)x(64×5.5)
=1000x(320+32)
=1000x352
=352000