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长方形的周长

长方形的周长. 那你知道这个花坛的周长吗?. 我知道这个花坛的边长是 5 米,. 5 + 5 + 5 + 5 = 20 (米). 5×4 = 20 (米). 6 米. 4 米. (它们又来到了一个长6米、宽 4 米大的长方形草坪旁。). 我围草坪走了一圈是多少米呢?. 要怎么算呢?. ( 6 + 4 ) ×2 = 20 (米). 长方形的周长=(长+宽) ×2. 做一做:. 一、判断:. 一个篮球场长 26 米,宽 14 米,它的周长是多少米 ?. ① 26 + 14×2 = 54 (米). ② 26 ×2 + 14 ×2 = 80 (米). √.

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长方形的周长

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  1. 长方形的周长

  2. 那你知道这个花坛的周长吗? 我知道这个花坛的边长是5米, 5+5+5+5=20 (米) 5×4=20(米)

  3. 6米 4 米 (它们又来到了一个长6米、宽4米大的长方形草坪旁。) 我围草坪走了一圈是多少米呢? 要怎么算呢? (6+4)×2=20(米) 长方形的周长=(长+宽)×2

  4. 做一做: 一、判断: 一个篮球场长26米,宽14米,它的周长是多少米? ① 26+14×2=54(米) ② 26 ×2 +14 ×2 =80(米) √ ③ (26+14)×2=80(米) √

  5. 二、一块长50米,宽30米的花园在四周围上铁  丝,要多少米铁丝才够用?二、一块长50米,宽30米的花园在四周围上铁  丝,要多少米铁丝才够用? * * * * * * * * * * * * * * (50+30)×2=160(米) * * * * * * * * * * * * * * * * * * * * * * * *

  6. 长方形周长的计算 长方形的周长=(长+宽)×2

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