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计算:54×1021440×976÷4882003×2005-2002×20069999×2222+3333×33346363÷7÷96363×464÷232.
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计算: 54×102 1440×976÷488 2003×2005-2002×2006 9999×2222+3333×3334 6363÷7÷9 6363×464÷232. |
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(1)54×102, =54×(100+2), =54×100+54×2, =5400+108, =5508; (2)1440×976÷488, =1440×(488×2)÷488, =1440×2×(488÷488), =1440×2×1, =2880; (3)2003×2005-2002×2006, =2003×2005-2002×(2005+1), =2003×2005-[2002×2005+2002×1], =2003×2005-2002×2005-2002, =2005×(2003-2002)-2002, =2005-2002, =3; (4)9999×2222+3333×3334, =3333×3×2222+3333×3334, =3333×6666+3333×3334, =3333×(6666+3334), =3333×10000, =33330000; (5)6363÷7÷9, =6363÷(7×9), =6363÷63, =101; (6)6363×464÷232, =6363×232×2÷232, =6363×2×(232÷232), =6363×2×1, =12726. |
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