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少儿口算:整十数减整十数的减法

2015-04-17 15:55:00 来源:无忧考网
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(1) 90 - 70 =
(2) 70 - 50 =
(3) 50 - 30 =
(4) 70 - 40 =
(5) 50 - 20 =

(6) 40 - 10 =

(7) 50 - 10 =
(8) 70 - 20 =
(9) 50 - 40 =
(10) 90 - 60 =
(11) 60 - 10 =
(12) 70 - 10 =
(13) 70 - 30 =
(14) 90 - 20 =
(15) 80 - 40 =
(16) 70 - 60 =
(17) 80 - 30 =
(18) 80 - 70 =
(19) 60 - 30 =
(20) 60 - 40 =

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