①8.2×0.7﹣3.7
②12.9﹣4.65+2.1﹣5.35
③25×3.2×12.5
④0.83×540+0.83×460
⑤4.5×[28.8﹣(12.4+7.6)]
586+38= 12.5÷10= 175-90= 0÷125+24=
7×9÷7×9= 3.54×10= 80-15×5= 28×4÷2=
182×25= 83×302= 740×60=
0.5+0.6=
2.4+0.61=
5.6+4.4=
5.5-0.5=
1-0.05=
10-0.1=
7元零8分﹣3元9角
3km50m+750m
10kg﹣2kg650g