
8.9x9十0.178十89xO.o98怎样简便计算?
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8.9x9十0.178十89xO.o98怎样简便计算?
8.9×9十0.178十89×O.098
=8.9×9十8.9×0.02十8.9×0.98
=8.9×(9十0.02十0.98)
=8.9×10
=89
8.9×9十0.178十89×O.098
=8.9×9十8.9×0.02十8.9×0.98
=8.9×(9十0.02十0.98)
=8.9×10
=89
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