5.24×8.1×0.8减的简便算法是什么?
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5.24×8.1×0.8
=5.24×0.8×8.1
=4.192×(8+0.1)
=4.192×8+4.192×0.1
=33.536+0.4192
=33.9552
=5.24×0.8×8.1
=4.192×(8+0.1)
=4.192×8+4.192×0.1
=33.536+0.4192
=33.9552
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5.24×8.1×0.8=42.444×0.8=33.9552
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原式=5.24*4*0.2*8.1
=20.96*1.62
=(21-0.04)*1.62
=21*1.62-0.04*1.62
=(20+1)*1.62-0.0648
=32.4+1.62-0.0648
=34.02-0.0648
=33.9552
=20.96*1.62
=(21-0.04)*1.62
=21*1.62-0.04*1.62
=(20+1)*1.62-0.0648
=32.4+1.62-0.0648
=34.02-0.0648
=33.9552
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5.24x8.1x0.8
=5.24ⅹ0.8ⅹ8.1
=4.192x(8+0.1)
=33.536+0.4192
=33.9552
=5.24ⅹ0.8ⅹ8.1
=4.192x(8+0.1)
=33.536+0.4192
=33.9552
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