`A, 518946+ 72529 = 591475`
`B, 435260- 82796 = 352464`
`C, 1237`× `305 = 377825`
`D, 4576: 34 = 4576/34`
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`A, 5` yến `6 kg = ...56....kg.`
`B, 2/5` thế kỉ `=..40....`năm
`C, 9546m=...9.....km ...546..m`
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