一年级下册口算题-一年级两位数减整十数的减法
2018-03-01 15:11:48
(1)42 - 20 =
(2)29 - 10 =
(3)76 - 70 =
(4)48 - 30 =
(5)66 - 20 =
(6)30 - 30 =
(7)11 - 10 =
(8)54 - 20 =
(9)25 - 20 =