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| (1)30÷15+15×30 =2+450 =452; (2)201×35 =(200+1)×35 =200×35+1×35 =7000+35 =7035; (3)7×(4×3)×25 =(7×3)×(4×25) =21×100 =2100; (4)125×48 =125×(8×6) =125×8×6 =1000×6 =6000; (5)(270+35×6)÷80 =(270+210)÷80 =480÷80 =6; (6)88×13-13×68 =(88-68)×13 =20×13 =260. |
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