奧數(shù) > 小學(xué)試題庫 > 口算題 > 三年級口算題 > 正文
2010-08-18 15:31:25
三年級口算題:整十?dāng)?shù)乘整十?dāng)?shù)
(1)70 × 40 =
(2)30 × 10 =
(3)30 × 10 =
(4)40 × 20 =
(5)60 × 50 =
(6)10 × 30 =
(7)20 × 70 =
(8)80 × 50 =
(9)30 × 70 =
(10)30 × 30 =
(11)40 × 60 =
(12)60 × 50 =
(13)70 × 80 =
(14)50 × 50 =
(15)90 × 60 =
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