3.54×500-354+35.4×102.66×49+266--4.9×26.64.82×0.59+0.41×1.59-0.323×5.9简算8.67×23-0.867×130+0.34×867+8.67×5.61.993×1993000+19.92×199200-199.3×19920-1992×1991333.3×12340-111110×370.210.3×5+5.5×3+1.8×6.5-1.3×0.5×8666.66×

题目详情

3.54×500-354+35.4×10 2.66×49+266--4.9×26.6 4.82×0.59+0.41×1.59-0.323×5.9 简算
8.67×23-0.867×130+0.34×867+8.67×5.6 1.993×1993000+19.92×199200-199.3×19920-1992×1991 333.3×12340-111110×370.2 10.3×5+5.5×3+1.8×6.5-1.3×0.5×8 666.66×100.01+666.66×66,66 1990×189.9-1989×198.8急

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答案和解析

3.54×500-354+35.4×10
=354×5-354+354
=354×5
=1770

2.66×49+266-4.9×26.6
=2.66×49-49×2.66+266
=0+266
=266

4.82×0.59+0.41×1.59-0.323×5.9
=4.82×0.59-3.23×0.59+0.41×1.59
=(4.82-3.23)×0.59+0.41×1.59
=1.59×0.59+0.41×1.59
=1.59×(0.59+0.41)
=1.59×1
=1.59

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