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图书阅览室里上午有 53 人,中午走了 24 人,下午又来了 38 人,阅览室里下午有多少人?

图书阅览室里上午有 53 人,中午走了 24 人,下午又来了 38 人,阅览室里下午有多少人?. 一、说说怎么算的? 温馨提示: 1、这个算式中含有什么运算? 2、按什么顺序计算的? 3、先算什么,再算什么?. 下面的计算对吗?如果不对,把它改正过来。. =30. ( 2 ) 42÷7÷2. ( 1 ) 3×2×5. ( 3 ) 34-17+3. =6×5 =30. = 17+3 = 20. =34-20 =14. =6×5 =30. = 6÷2 =3. =6 =3. ( 4 ) 3×8÷4. ( 5 ) 18÷3×3.

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图书阅览室里上午有 53 人,中午走了 24 人,下午又来了 38 人,阅览室里下午有多少人?

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  1. 图书阅览室里上午有53人,中午走了24人,下午又来了38人,阅览室里下午有多少人?

  2. 一、说说怎么算的? 温馨提示: 1、这个算式中含有什么运算? 2、按什么顺序计算的? 3、先算什么,再算什么?

  3. 下面的计算对吗?如果不对,把它改正过来。 =30 (2)42÷7÷2 (1)3×2×5 (3)34-17+3 =6×5 =30 =17+3 =20 =34-20 =14 =6×5 =30 =6÷2 =3 =6 =3 (4)3×8÷4 (5)18÷3×3 =6×3 =18 =18÷9 =2 =24÷4 =6

  4. 你能解决下面的问题吗? 4×6÷3×7 =24÷3×7 =8×7 =56

  5. 根据题意,选择正确的算式 • 86减20的差,加上10,和是多少? • ❶(86-20)+10 • ❷ 86-20+10 • ❸ 86-(20+10) • ❷ 86-20+10

  6. 根据下表列出相应算式 68-40-25 42+14-35 4×3÷6 54÷6÷3

  7. 算式: 算式: 先填空,再列综合算式 + 6 6 36 15 36 ÷ 9 51 20 4 31 36+15-20=31 6×6÷9=4

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