①②4×8×1.25×25% ③4÷(75%+50%-1)
÷(1-0.1-60%) ×+0.7×+×
2024÷2023÷ 2----
2.52=
2.5÷40%=
1.25×32=
(-+)×12 0.25×32×12.5%
99×55%+0.55 125%×3.2×25%