二年级口算题:整十数减整十数的减法
二年级口算题:整十数减整十数的减法(1)100 - 40 =
(2)50 - 40 =
(3)150 - 70 =
(4)140 - 50 =
(5)120 - 60 =
(6)70 - 60 =
(7)50 - 40 =
(8)160 - 80 =
(9)130 - 80 =
(10)70 - 20 =
(11)80 - 60 =
(12)60 - 30 =
(13)80 - 20 =
(14)60 - 10 =
(15)110 - 40 =
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