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- 2026-04-2774×98=74×100-74. [ ]
- 2026-04-2723×56+2.3×440+0.46×0.5．
- 2026-04-27怎样简便就怎样算: 512×14×24 42×(56-47) (23+12)×67 35×149-49×35．
- 2026-04-271997×0.71+11×714+2222×0.29= ．
- 2026-04-2765×2000-64×2001．
- 2026-04-2713419+861519×0.25+0.625×861519+861519×0.125= ．
- 2026-04-27198×198-197×199．
- 2026-04-2725×24=25× +25×4．