① ② ③
-+ +(-) 1.25×0.25×3.2 +0.75++4.25
53.7÷2.5÷0.4
0.35×101
3.7×4.8+0.37×52
999×2.5+333×12.5
382×101-382
81+9×91
682-(324-18)
1.25×2.5×3.2
12.13+7.15-1.13+2.85
99×1.2
12.5×64
3.6+5.7+6.4+2.3
7.8-7.3+2.2-2.7
9.7÷8÷1.25