一年级数学口算练习题:20以内的加减算法
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一年级数学口算练习题:20以内的加减算法
1 - 1 + 16=
(2)18 + 1 - 7=
(3)1 + 9 - 3=
(4)8 - 2
+ 1=
(5)1 + 7 - 5=
(6)7 + 8 - 5=
(7)13
- 4 + 10=
(8)9 + 5 - 12=
(9)6 + 10 - 7=
(10)11 - 9 + 1=
(11)5 + 4 - 8=
(12)9 +
1 - 2=
(13)7 + 10 - 5=
(14)9 + 7 - 2=
(15)19 - 19 + 18=
(16)16 - 7 + 1=
(17)2 + 4 - 2=
(18)7 - 5 - 2=
(19)6 -
4 + 9=
(20)2 + 9 - 9=
(21)8 + 6 - 4=
第
1 页
(22)12 - 2 + 8=
(23)5 + 5 - 8=
(24)20 - 8 - 9=
(25)15 - 9 + 2=
(26)5
+ 7 + 4=
(27)11 + 9 - 2=
(28)11 + 2 - 5=
(29)19 - 6 - 7=
(30)4 + 6 - 8=
(31)7 -
1 + 6=
(32)1 + 18 - 17=
(33)11 + 9 - 13=
(34)8 - 3 + 3=
(35)14 + 2 - 15=
(36)17
+ 2 - 15=
(37)13 + 4 - 1=
(38)12 + 5 - 2=
(39)16 + 1 - 17=
(40)10 - 9 + 11=
(41)15 + 4 - 18=
(42)9 + 10 - 4=
(43)17 + 1 - 15=
第 2 页
(44)19 +
1 - 2=
(45)19 - 9 + 8=
1)1 - 1 + 16=16
(2)18 + 1 - 7=12
(3)1 + 9 - 3=7
(4)8 -
2 + 1=7
(5)1 + 7 - 5=3
(6)7 + 8 - 5=10
(7)13 - 4 + 10=19
(8)9 + 5 - 12=2
(9)6
+ 10 - 7=9
(10)11 - 9 + 1=3
(11)5 + 4 -
8=1
(12)9 + 1 - 2=8
(13)7 + 10 - 5=12
(14)9 + 7 - 2=14
(15)19 - 19 + 18=18
(16)16 - 7 + 1= 10
(17)2 + 4 - 2=4
(18)7 - 5 - 2=0
(19)6 - 4 + 9=11
(20)2
+ 9 - 9=2
第 3 页
(21)8 + 6 - 4=10
(22)12 - 2 + 8=18
(23)5 + 5 - 8=2
(24)20 - 8 - 9=3
(25)15 - 9 + 2=8
(26)5 + 7 + 4=16
(27)11 + 9 - 2=18
(28)11 + 2 - 5=8
(29)19 - 6 - 7=6
(30)4 + 6 - 8=2
(31)7 - 1 + 6=12
(32)1
+ 18 - 17=2
(33)11 + 9 - 13=7
(34)8 - 3 +
3=8
(35)14 + 2 - 15=1
(36)17 + 2 - 15=4
(37)13 + 4 - 1=16
(38)12 + 5 - 2=15
(39)16 + 1 - 17=0
(40)10 - 9 + 11=12
(41)15 + 4 - 18=1
(42)9 + 10 - 4=15
第
4 页
(43)17 + 1 - 15=3
(44)19 + 1 -
2=18
(45)19 - 9 + 8=18
(1)1 + 14 + 1 =
(2)9 - 6 - 1=
(3)1 + 15 + 3 =
(4)4 + 4
+ 6 =
(5)10 + 1 + 6 =
(6)17 - 13 - 3=
(7)6 - 4 - 1=
(8)1 + 4 + 4 =
(9)10 + 4
+ 5 =
(10)1 + 2 + 5 =
(11)9 + 1 + 6 =
(12)4 + 1 + 10 =
(13)2 + 7 + 10 =
(14)9 - 7 - 1=
(15)5 + 4 + 3 =
(1)1 +
14 + 1 =16
(2)9 - 6 - 1=2
(3)1 + 15 + 3
=19
(4)4 + 4 + 6 =14
第 5 页
(5)10 + 1 + 6 =17
(6)17 - 13 - 3=1
(7)6 - 4 - 1=1
(8)1 + 4 + 4 =9
(9)10 +
4 + 5 =19
(10)1 + 2 + 5 =8
(11)9 + 1 + 6
=16
(12)4 + 1 + 10 =15
(13)2 + 7 + 10 =19
(14)9 - 7 - 1=1
(15)5 + 4 + 3 =12
(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=
第 6 页
(12)19 - 7 - 1=
(13)12 - 6 - 4=
(14)8 - 1 - 5=
(15)11
- 2 - 8=
(1)9 - 5 - 1=3
(2)11 - 8 - 2=1
(3)8 - 4 - 3=1
(4)14 - 2 - 3=9
(5)7 -
2 - 2=3
(6)19 - 12 - 1=6
(7)17 - 1 - 11=5
(8)18 - 1 - 14=3
(9)14 - 6 - 5=3
(10)9
- 6 - 2=1
(11)17 - 16 - 1=0
(12)19 - 7 -
1=11
(13)12 - 6 - 4=2
(14)8 - 1 - 5=2
(15)11 - 2 - 8=1
(1)8 + 9 + 2 =
(2)2 +
2 + 14 =
(3)1 + 13 + 1 =
第 7 页
(4)6 + 3 + 1 =
(5)9 + 1 + 9 =
(6)2 + 4 + 3 =
(7)1 + 10 + 8 =
(8)2 +
6 + 7 =
(9)10 + 3 + 2 =
(10)6 + 3 + 8 =
(11)4 + 15 + 1 =
(12)10 + 1 + 5 =
(13)9 + 2 + 3 =
(14)1 + 14 + 3 =
(15)1
+ 10 + 5 =
(1)8 + 9 + 2 =19
(2)2 + 2 + 14
=18
(3)1 + 13 + 1 =15
(4)6 + 3 + 1 =10
(5)9 + 1 + 9 =19
(6)2 + 4 + 3 =9
(7)1
+ 10 + 8 =19
(8)2 + 6 + 7 =15
(9)10 + 3 +
2 =15
(10)6 + 3 + 8 =17
第 8 页
(11)4 + 15 + 1 =20
(12)10 + 1 + 5
=16
(13)9 + 2 + 3 =14
(14)1 + 14 + 3 =18
(15)1 + 10 + 5 =16
(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
(1)(12) - 10 = 2
(2)14 - (4)= 10
第 9 页
(3)17 +(1) = 18
第 10
页