沏茶问题练习题

  • 时间:2020-04-27 15:03:15
  • 分类:数学世界
  • 阅读:110 次

沏茶问题练习题,作为课本上练习题的补充,主要培养学生合理安排时间的意识和能力。

1、妈妈下班做饭,淘米要3分钟,煮饭要30分钟,洗菜要8分钟,切菜要10分钟,炒菜要10分钟。如果煮饭和做菜用不同的锅和炉子,妈妈将饭菜都煮好至少要多少时间?

2、红红要为爸爸冲一杯咖啡,可是开水用光了,她需要烧开水(6分钟),找咖啡(1分钟)、洗茶杯(2分钟)。她该怎样安排才能尽快让爸爸喝上热咖啡?

3、早晨妈妈安排小敏自己用奶粉冲一杯牛奶,洗水壶要1分钟,洗杯子和汤匙各要1分钟,浇开水要12分钟,取奶粉要1分钟。小敏怎样安排这些事情最合理,并且能使自己尽快喝上牛奶?

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