(1)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=
20以内的加减混合参考答案
(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