(1)600 × 50 =
(2)100 × 30 =
(3)900 × 10 =
(4)400 × 60 =
(5)100 × 10 =
(6)40 × 100 =
(7)600 × 60 =
(8)700 × 40 =
(9)40 × 600 =
(10)100 × 40 =
(11)800 × 10 =
(12)60 × 200 =
(13)60 × 100 =
(14)30 × 400 =
(15)90 × 500 =
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(1)600 × 50 =
(2)100 × 30 =
(3)900 × 10 =
(4)400 × 60 =
(5)100 × 10 =
(6)40 × 100 =
(7)600 × 60 =
(8)700 × 40 =
(9)40 × 600 =
(10)100 × 40 =
(11)800 × 10 =
(12)60 × 200 =
(13)60 × 100 =
(14)30 × 400 =
(15)90 × 500 =
TAG:数学