①125×32×25
②30.6+3.55+6.45+9.4
③25×(400+40)
④(35+35+35+35)×25
547+39-147
45×[360÷(40-16)]
534-(134-60)
101×99
25×47-25×3
560÷35
45岁
8岁
16岁
25岁
145+398= 6-0.6= 0.24×50= 3﹣3÷7= (+)×56=
1.25×6×8= = = ÷0.75= ×4÷×4=