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试题原文 |
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(1)6.01-1.9+4.99-2.1, =(6.01+4.99)-(1.9+2.1), =11-4, =7; (2)0.25×32×12.5, =(0.25×4)×(8×12.5), =1×100, =100; (3)0.65×64-65×0.54, =0.65×64-0.65×54, =0.65×(64-54), =0.65×10, =6.5; (4)90÷(3.6-1.8), =90÷1.8, =50; (5)52+6.5+26×0.37, =58.5+9.62, =68.12; (6)0.36÷[(6.1-4.6)×O.8], =0.36÷[1.5×O.8], =0.36÷1.2, =0.3. |
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