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试题原文 |
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(1)0.3+9.7×0.23, =0.3+2.231, =2.531; (2)91.6-3.8-6.62, =87.8-6.62, =81.18; (3)1.03×(8.8÷0.25), =1.03×35.2, =36.256; (4)2.23×7.5-2.23+3.5×2.23, =2.23×(7.5-1+3.5), =2.23×10, =22.3; (5)1.2÷[(5.1-3.6)×0.08], =1.2÷[1.5×0.08], =1.2÷0.12, =10; (6)99.9+9.9+0.9+0.3, =(100-0.1)+(10-0.1)+(1-0.1)+0.1, =111-0.3+0.3, =111. |
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