练习六(1)
1: (1) √ (2) √ (3)× (4) √ (5) ×
2: (1) 16
(2) 略
3: 20÷5=4(厘米)
(4+20)×2
=24×2
=48(厘米)
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练习六(1)
1: (1) √ (2) √ (3)× (4) √ (5) ×
2: (1) 16
(2) 略
3: 20÷5=4(厘米)
(4+20)×2
=24×2
=48(厘米)
http://m.ksjqmj.com/sannianjidaan/3658.html
推荐访问