简便计算.
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| (1)25×26×4 =25×4×26 =100×26 =2600; (2)164-83-17 =164-(83+17) =164-100 =64; (3)125×101-125 =125×(101-1) =125×100 =12500; (4)87000÷8÷125 =87000÷(8×125) =87000÷1000 =87; (5)66×39+39×34 =(66+34)×39 =100×39 =3900; (6)125×88 =125×(8×11) =125×8×11 =1000×11 =11000. |
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