一年级口算题:20以内的填括号
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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整十数减一位数的减法
(1)90 - 4 =
(2)70 - 5 =
(3)90 - 2 =
(4)10 - 9 =
(5)20 - 5 =
1 3
(6)40 - 8 =
(7)90 - 4 =
(8)90 - 9 =
(9)10 - 5 =
(10)10 - 5 =
(11)50 - 3 =
(12)50 - 2 =
(13)70 - 1 =
(14)90 - 6 =
(15)20 - 1
=整十数加整十数的加法
(1)80 + 10 =
(2)30 + 20 =
(3)40 + 40 =
(4)50 + 30 =
(5)60 + 10 =
(6)80 + 10 =
(7)40 + 30 =
(8)20 + 60 =
(9)20 + 20 =
(10)40 + 40 =
(11)60 + 10
=
2 3
(12)20 + 10 =
(13)60 + 20 =
(14)30 + 40 =
(15)50 +
10 =
3 3