小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題

字號(hào):

在解奧數(shù)題時(shí),經(jīng)常要提醒自己,遇到的新問題能否轉(zhuǎn)化成舊問題解決,化新為舊,透過表面,抓住問題的實(shí)質(zhì),將問題轉(zhuǎn)化成自己熟悉的問題去解答。轉(zhuǎn)化的類型有條件轉(zhuǎn)化、問題轉(zhuǎn)化、關(guān)系轉(zhuǎn)化、圖形轉(zhuǎn)化等。以下是整理的《小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題》相關(guān)資料,希望幫助到您。
    1.小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題
    (7.7+1.54)÷0.7          2.5×2.4          2.7÷45 
    0.35×1.25×2×0.8       32.4×0.9+0.1×32.4     15÷0.25
    70÷28        15÷(0.15×0.4)         4.25÷2.5×9.9+0.17
    3.29+0.73+2.27         3.29-0.73-2.27        7.5+2.5-7.5+2.5
    7.325-3.29-3.325        7.325-(5.325+1.7)         7.325-(5.325-1.7)
    3.29+0.73-2.29+2.27     3.29×0.25×4             0.125×8.8    
    0.25×0.28              0.125×3.2×2.5            35×40.2  
    0.25×4÷0.25×4           3.5×9.9                   3.5×99+3.5
    3.5×101-3.5           3.5×9.9+3.5×0.1           3.5×2.7+35×0.73
    3.5×2.7-3.5×0.7      (32+5.6)÷0.8              3.5÷0.6-0.5÷0.6
    4.9÷3.5             7÷0.25÷4                 7÷0.125   
    7.35÷(7.35×0.25)   7.35÷(7.35÷0.25)  
    2.小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題
    3.29+0.73+2.27             3.29-0.73-2.27          7.5+2.5-7.5+2.5
    7.325-3.29-3.325           7.325-(5.325+1.7)         7.325-(5.325-1.7)
    3.29+0.73-2.29+2.27       3.29×0.25×4                 0.125×8.8    
    0.25×0.28                     0.125×3.2×2.5                  35×40.2  
    0.25×4÷0.25×4                 3.5×9.9                   3.5×99+3.5
    3.5×101-3.5               3.5×9.9+3.5×0.1           3.5×2.7+35×0.73
    3.5×2.7-3.5×0.7      (32+5.6)÷0.8              3.5÷0.6-0.5÷0.6
    4.9÷3.5                7÷0.25÷4                   7÷0.125   
    7.35÷(7.35×0.25)                      7.35÷(7.35÷0.25) 
    3.小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題
    0.25×0.28  0.125×3.2×2.5  35×40.2  0.25×4÷0.25×4
    3.5×9.93.5×99+3.5  3.5×101-3.5  3.5×9.9+3.5×0.1
    3.5×2.7+35×0.73  3.5×2.7-3.5×0.7  (32+5.6)÷0.8
    3.5÷0.6-0.5÷0.6  4.9÷3.5  7÷0.25÷4
    7÷0.125÷8  7.35÷(7.35×0.25)  7.35÷(7.35÷0.25)
    7.325-(5.325+1.7)  3.29+0.73+2.27  3.29-0.73-2.27
    7.5+2.5-7.5+2.5  7.325-3.29-3.325  7.325-(5.325+1.7)
    4.小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題
    (1)45×9
    (2)457×99
    (3)762×999
    (4)34×98
    【答案】
    (1)45×9=45×10-45=450-45=405
    (2)457×99=457×100-457=45700-457=45243
    (3)762×999=762×1000-762=762000-762=761238
    (4)34×98=34×100-34×2=3400-68=3332“
    5.小學(xué)五年級(jí)簡(jiǎn)便計(jì)算奧數(shù)題
    1、56+31+24
    2、615+475+125
    3、125×64
    4、89+101+111
    5、24+127+476+573
    6、400-273-127
    7、327+(96-127)
    8、70×98
    9、442-103-142
    10、999+99+9
    11、67×5×2
    12、25×(78×4)
    13、72×125
    14、9000÷125÷8
    15、400÷25
    16、25×36
    17、103×27
    18、76×102
    19、3600÷25÷4
    20、99×35
    21、(25+12)×4
    22、56×27+27×44
    23、56×99+56
    24、125×25×8×4
    25、25×32×125