1.50米增加25%是()米?2.()米减少25%是40米?3.40千克比()千克多10%?4.()吨比40吨多10%?
问题描述:
1.50米增加25%是()米?2.()米减少25%是40米?3.40千克比()千克多10%?4.()吨比40吨多10%?
答
1.50米增加25%是(1.875)米
2.(53又1/3)米减少25%是40米
3.40千克比(36又4/11)千克多10%
4.(44)吨比40吨多10%列式.计算过程.答案50×(1+25%)=1.87540÷(1-25%)=53又1/340÷(1+10%)=36又4/1140×(1+10%)=44