谁知道(259.9除以2.3减2.99除以0.23的商)怎么简算~~急十万火急啊~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!

问题描述:

谁知道(259.9除以2.3减2.99除以0.23的商)怎么简算~~急
十万火急啊~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!

将0.23的分子分母括大十倍通分!

259.9/2.3-2.99/0.23
=259.9/2.3-29.9/2.3
=(259.9-29.9)/2.3
=230/2.3
=100