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试题原文 |
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(1)3
=3
=3
=
=
=2; (2)(
=
=17+30, =47; (3)(9.6-10
=(9.6-
=(9.6-
=(9.6-8.4)÷1, =1.2; (4)5.66×7.28-3.16×3.16-3.16×4.12, =5.66×7.28-3.16×(3.16+4.12), =5.66×7.28-3.16×7.28, =(5.66-3.16)×7.28, =2.5×7.28, =18.2; (5)2012×0.875+201.2×1.25, =2012×0.875+2012×0.125, =2012×(0.875+0.125), =2012×1, =2012; (6)
=1-
=1-
=
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