20-4.15+18.36-5.85 99×36+36 78.43-(7.36+19.43)125×(8+24)×25 25×[(180+492)÷32] 99×22+33×34
①125.8-25.8× 0.8
②0.4×2.5+1.03
③1.09×2.7+7.3×1.09
①8×2.5×0.125÷
②(+﹣)×24
③6.5÷×
④(+)×+
⑤4×(﹣)×9
⑥÷7+×