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| (1)0.11×1.8+8.2×0.11, =(1.8+8.2)×0.11, =10×0.11, =1.1; (2)0.8×(3.2-2.99÷2.3), =0.8×(3.2-1.3), =0.8×1.9, =1.52; (3)5.4÷(3.94+0.86)×0.8, =5.4÷4.8×0.8, =5.4÷(4.8÷0.8), =5.4÷6, =0.9; (4)(8.1-5.4)÷3.6+85.7, =2.7÷3.6+85.7, =0.75+85.7, =86.45. |
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