问题
填空题
30吨减少40%后是______;______米增加20%后是96米.
答案
30×(1-40%),
=30×60%,
=18(吨);
96÷(1+20%),
=96÷1.2,
=80(米);
故答案为:18吨,80.
30吨减少40%后是______;______米增加20%后是96米.
30×(1-40%),
=30×60%,
=18(吨);
96÷(1+20%),
=96÷1.2,
=80(米);
故答案为:18吨,80.