一个乡去年原计划造林12公顷,实际造林14公顷。
原计划比实际造林少百分之几?
实际: 原计划:
14公顷 12公顷
原计划比实际少的
(14 - 12)÷14
= 2 ÷ 14
= 14.3%
答:原计划比实际造林少14.3%
做一做
某工厂九月份用水800吨,十月份用水700吨。十月份 比九月份节约用水百分之几?
(800 - 700)÷ 800
= 100 ÷ 800 = 0.125 = 12.5%
答:十月份比九月份节约用水12.5%
1、填空。 (1) 20是25的( 20 )%, 25是20的( 125 )%。 20比25少( 80 )%, 25比20多( 25 )% (2)如果甲数比乙数少30%,则乙数比甲多( 42.9)%。 (3)王师傅完成了98个零件,全部合格,产品的合格率是( 100 )%。
2、跟据
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