25×1.0425 9.27×0.499.27
0.52×3.45.2×0.34 2.5×1.012.5×0.99
1.25×2.5+5.51.25×(2.5+5.5) 8.23×5.1840
①2.8×3.6+1.4×2.8
②4.75×101
③3.17×1.2+1.83
④4.95-14.82÷7.6
⑤12.5×16×2.5