怎样算简便怎样。
①5.02-3.5+0.98 ②2.88+2.3+4.7 ③7300÷(73×25) ④1050÷15÷7
⑤80-12.4-7.6 ⑥568-(68+178)
①5.02-3.5+0.98
=5.02+0.98-3.5=6-3.5=2.5②2.88+2.3+4.7=2.3+4.7+2.88=7+2.88=9.88③7300÷(73×25)=7300÷73÷25=100÷25=4④1050÷15÷7 =1050÷(15×7)=1050÷105=10⑤80-12.4-7.6=80-(12.4+7.6)=80-20=60⑥568-(68+178)=568-68-178=500-178=322