小学一年级口算题:20以内的连减
(1)9 - 5 - 1=
(2)11 - 8 - 2=
(3)8 - 4 - 3=
(4)14 - 2 - 3=
(5)7 - 2 - 2=
(6)19 - 12 - 1=
(7)17 - 1 - 11=
(8)18 - 1 - 14=
(9)14 - 6 - 5=
(10)9 - 6 - 2=
(11)17 - 16 - 1=
(12)19 - 7 - 1=
(13)12 - 6 - 4=
(14)8 - 1 - 5=
(15)11 - 2 - 8=
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