3:
略
4: 铅笔
(4.6-3)÷(5-3)
=1.6÷2
=0.8(元)
钢笔
13.6-0.8=12.8(元)
橡皮
(4.6-0.8×5)÷2
=0.6÷2
=0.3(元)
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3:
略
4: 铅笔
(4.6-3)÷(5-3)
=1.6÷2
=0.8(元)
钢笔
13.6-0.8=12.8(元)
橡皮
(4.6-0.8×5)÷2
=0.6÷2
=0.3(元)
http://m.ksjqmj.com/wunianjidaan/1382.html
推荐访问