①6.9×3.6-4.84÷0.4,数拦 =24.84-12.1, =12.74; ②4.75+8.4÷(9.2-6.8), =4.75+8.4÷2.4, =4.75+3.5, =8.25;含毕基 ③1.2÷[2.5×(4.3-2.7)], =1.2÷[2.5×1.6], =1.2÷4, =0.3; ④4.5×(0.75-0.356)+9.23, =4.5×0.394+9.23, =1.773+9.23, =11.003; ⑤0.88÷0.8+3.2×1.25, =1.1+4×0.8×1.25, =1.1+4×(0.8×1.25)谈谨, =1.1+4×1, =1.1+4, =5.1; ⑥5.4+(0.63+0.555÷1.5), =5.4+(0.63+0.37), =5.4+1, =6.4. |