题目内容
30千克比40千克少______%,72千米比100千米少______%. 3、实际造价是计划的85%,实际造价比计划节约了______%.
(1)(40-30)÷40,
=10÷40,
=25%;
答:30千克比40千克少25%.
(2)(100-72)÷100,
=28÷100,
=28%;
答:72千米比100千米少28%.
(3)1-85%=15%,
答:实际造价比计划节约了15%.
故答案为:25,28,15.
=10÷40,
=25%;
答:30千克比40千克少25%.
(2)(100-72)÷100,
=28÷100,
=28%;
答:72千米比100千米少28%.
(3)1-85%=15%,
答:实际造价比计划节约了15%.
故答案为:25,28,15.
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