4.76×101-4.76 4.8×7.5÷1.5
(4.75×5.47+3.53×4.75)÷4.5
9.999×0.8+1.111×2.8
0.78×101 5.4×3.2+3.2×4.6 1.25×32×2.5
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1
①25×32×1.25
②(+0.375)÷(×)
③×+÷7
④6﹣(+)
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]