(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
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