關於國小三年級速算與巧算奧數練習題
奧數對學生起到的並不僅僅是數學方面的作用，通常比普通數學要深奧些，快來做做奧數題來鍛鍊自己吧!
計算時間：正確率：
(1)146000÷125=(2)211211÷211=(3)7500÷25÷4=
(4)264264÷7÷11÷13=(5)(130+65)÷13=
(6)798÷125+202÷125=(7)432÷(8×9)=
(8)21×15÷5=(9)(54×24)÷(9×4)=
(10)(2×3×5×7×11×13×17×19)÷(38×51×65×77)=
(11)1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)=
(12)(110+77+88+99)÷11=
(1)146000÷125(2)211211÷211 (3)7500÷25÷4
=146×1000÷125 =211×1001÷211 =7500÷(25×4)
=146×8 =1001 =7500÷100
=1168 =75
(4)264264÷7÷11÷13 (5)(130+65)÷13
=264×1001÷(7×11×13) =130÷13+65÷13
=264×1001÷1001 =10+5
=264 =15
(6)798÷125+202÷125(7)432÷(8×9)
=(798+202)÷125 =432÷8÷9
=1000÷125 =54÷9
=8 =6
(8)21×15÷5 (9)(54×24)÷(9×4)
=21×3 =54×24÷9÷4
=63 =54÷9×24÷4
=6×6
=36
(10)(2×3×5×7×11×13×17×19)÷(38×51×65×77)
=(2×19÷38)×(3×17÷51)×(5×13÷65)×(7×11÷77)
=1
(11)1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)
=1÷2×3÷3×4÷4×5÷×6
=1÷2×6
=3
(12)(110+77+88+99)÷11
=110÷11+77÷11+88÷11+99÷11
=10+7+8+9
=34
