一年级数学口算练习题:20以内的加减算法-查字典数学网
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一年级数学口算练习题:20以内的加减算法

2017-03-14

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=

(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=

(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

(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

(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

(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=

(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 =

(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

(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

(3)17 +(1) = 18

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