小学一年级口算题:20以内的填括号
小学一年级口算题:20以内的填括号(1)() - 10 = 2
(2)14 - ()= 10
(3)17 +() = 18
(4)7 + ()= 20
(5) ()- 5 = 3
(6)18 -() = 7
(7)() - 10 = 4
(8)() - 4 = 9
(9)1 +() = 11
(10)15 -() = 1
(11)3 -() = 1
(12)() + 3 = 12
(13)() - 11 = 5
(14)() - 2 = 3
(15)18 -() = 3
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