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每个方阵有 8 行,每行有 10 人。

每个方阵有 8 行,每行有 10 人。. 3 个方阵一共有多少人?. 10×8 = 80 80×3 = 240 一共有 240 人. 10×8 ×3 = 240. 一共有多少个鸡蛋?. 一盒鸡蛋有: 5×6 = 30 ( 个) 一共有: 30×8 = 240 ( 个). 8 盒装一箱。. 6 个装一盒。. 960÷6 = 160 ( 盒) 160÷8 = 20 ( 箱). 960÷6 ÷8 = 20 ( 箱). 共有 960 个杯子. 能装多少箱?. 我坚持锻炼身体,每天跑两圈。.

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每个方阵有 8 行,每行有 10 人。

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  1. 每个方阵有8行,每行有10人。

  2. 3个方阵一共有多少人? 10×8=80 80×3=240 一共有240人 10×8 ×3=240

  3. 一共有多少个鸡蛋? 一盒鸡蛋有: 5×6=30(个) 一共有: 30×8=240(个)

  4. 8盒装一箱。 6个装一盒。 960÷6=160(盒)160÷8=20(箱) 960÷6 ÷8 =20(箱) 共有960个杯子 能装多少箱?

  5. 我坚持锻炼身体,每天跑两圈。 400×2=800(米)800×7=5600(米) 400×2 ×7=5600(米) 跑道每圈400米,他一个星期(7天)跑多少米?

  6. 我8天才吃608只害虫. 我每天能吃645只害虫. 比 每天多吃多少只害虫? 608÷8=76(只)645-76=569(只) 608÷8-76=569 (只)

  7. 昨天和今天共售出954张票。 平均每场售出多少张票?

  8. 400 ÷2 ÷3 =159(张) 954÷2 =477(张) 477÷3 =159(张)

  9. 一份试卷,共有20道题,每答对一题给6分,每答错一题扣4分。小丽把每道题都做了,得分是100分,她做对了多少道题?一份试卷,共有20道题,每答对一题给6分,每答错一题扣4分。小丽把每道题都做了,得分是100分,她做对了多少道题? 解这道题,可以设想,如果20道题全做对了,得分应该是: 20×6 =120(分) 但是现在只有100分,比满分少20分。每做错一题,应得的6分全丢了,还要倒扣4分,共计减少的分数是: 6 + 4 =10(分)

  10. 20-2=18, 做对了18道题。 做错了2道题。 现在总共少20分,那么: 20÷10=2(题)

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