①6.26+5.89+3.74
②0.47+0.36+2.64
③9.27-1.43-4.57
④125×72
⑤101×56
⑥3500÷4÷25
1-0.8= 15-2.6= 30.5÷1000=
24×5= 2.3-0.8-0.2= 20-20÷5=
4.7-2.9= 2.3×10=