1、10+40= 10+20= 10+30= 19+24= 17+25=20-10= 29-1= 39-2= 49-3= 49-14=28-15= 30-16= 38-27= 48-38= 28-9=27-15= 37-26= 47-7= 37-28= 27-19=26-2= 16-3= 36-4=46-5= 36-6=16-10= 35-1= 45-20= 35-30= 25-4=20+7= 22+8= 24+9= 25+10= 28+11=15-10= 44-18= 40-22= 34-13= 24-6=12+16= 13+17= 31+18= 21+19= 25+20=23-15= 39-2
2、6= 40-17= 49-18= 49-29=50以内口算练习三20+12= 22+13= 24+14=25+15= 26+16=25-5= 35-6= 45-27= 35-18= 25-9=48-10= 47-18= 27-20= 37-30= 37-14=23+17= 32+18=43+3= 43+4= 43+5=49-10= 38-12= 48-28= 38-33= 28-4=30+16= 33+17= 44+4= 24+15= 40+6=33-25= 23-16= 43-17= 30-18= 32-9=43+7= 42+8= 24+9= 34+10= 24+11=43-10= 32-1
3、1= 42-20= 42-40= 32-5=34+12= 24+13= 14+14=24+15=14+16=50以内口算练习四41-12= 31-2= 41-30= 31-24= 21-5=40-26= 25+7=24+17= 27+19= 45-28=25-9= 33-14= 42-17=31-6= 43-15=26+9= 18+14= 28+15=9+31= 41-27=31-19= 32-8= 46-7= 33-6= 35-15=26-7= 33-27= 27+14= 18+13= 37-16=10+26= 9+25= 41-37= 26+10=8+25=19-8= 28+5=29+15
4、= 18+16= 17+14=28+2= 34+7= 23+19=32-8= 25+18=16-9= 33+6= 43-27= 35-6= 42-15=50以内口算练习五13+25=33-16=36+9=19+15=30-28=40+6= 19+9= 38+7= 29-7=16+33=43-19=35-18= 26+5= 42-13= 31-14=32-19=39-32= 46+3= 25+17= 35+6=33-19= 43-28=30+4= 42-26= 44-35= 36+8=46-28= 27+4= 35+5=34+9=7+32= 47-10= 26+8= 19+16=28+5= 31
5、-3=18+25= 27+9=15+27=32-18= 29+2= 45-27= 34-26= 31-15=41-19=35-8=37-10= 42-34= 41-28=50以内口算练习六21-13= 32-14= 29+8= 31+12= 34-10=39-15= 49-26=40+7= 37-8=39-29=18-10= 17-1= 17-2=17-3=17-4=20+17=22+18=30+13= 13+24=23+15=19-10= 28-10= 28-23=48-30=38-24=31+16= 32+17=46+4= 14+25= 34-6=23-5= 33+16=43-18=35-
6、29=4+27=24+8=24+9= 14+11=33-10=42-13= 32-23=32-24=42-24=14+18= 24+15=34+16=50以内口算练习七43-26= 28-19= 31-17= 33+9= ( )+25=4227-19=44-15= 48-()=2932-9= 42+8=31-9=44+28= 15+()=3436-14=279=46-27=2317= 31-( )=542-18=37-18=38-21= 47-28=37-()=2035-17= 30-1434+636-29=14+()=4815+25=36-18=34-17 42+8()+18=3228+6=
7、34-1028+18=34-19=)-12=237+25= 44-24= 16+29 31-16= ()-8=3817+1345-18= 26+30= 25+18=)+15=3850以内口算练习八34-18= 45-17= 35+6= 42-18= ()-18=2438-19= 49-18= 37-29= 34+12= 46-18=2914=2718=1717= 2615= 2517=2219= 3618=4527=4426= 3125=1916=2716= 2618=258=4619= 218=3317=4536= 3215=1918= 2518=1714= 369= 1519=4319=
8、3318= 4027= 3216= 3415=1913= 1918= 1718=1617= 2419=3119= 4218=4637=4326= 4525=50以内口算练习九2419=258=4713=3230= 4140=3123= 4234=3314= 3112= 4430=248= 257=329=2715= 1826=4416= 325= 4125= 3328= 3516=1929=1926=1825= 2819=215= 3216= 4419=3629= 3528=417= 1616= 2318=2913= 1727=3418= 4536=4629= 4718= 3819=1715=
9、1826=2519= 4338= 36-17=36-28=36-35=26-14=50以内口算练习十18+11= 21+12=31+13=30+14= 21+15= 39-10=29-20=49-48=31-23= 25-13= 28-15= 44-38= 25-18= 30-15= 31-17= 32-27= 41-29= 50-22= 32-18= 23-7= 25+17= 30-14= 43-35= 33-18= 18+8= 30-19= 18-8= 34-26= 30-9= 45-37= 31-4= 43-37= 39+3= 31-18= 24+18= 30-13= 34-15= 38
10、-29= 42-16= 42+2 = 33-12= 33-18= 34-19= 31-18= 42-19= 30-15= 30-19= 35-37= 50以内口算练习十一42-16= 32-17= 41-13= 45-36= 44-26= 34-18= 44-26= 31-18= 40-25= 38+3= 45-17= 25+19= 40-20= 31-3= 40+8= 31-17= 27+16= 35-18= 40-15= 45-30= 42-17= 41-22= 32+15= 32-18= 25+14= 43-7= 37-19= 20+13= 38-19= 18+16= 33-18= 42
11、-18= 42-25= 14+18= 31-15= 31-14= 25+19= 46-19= 36-18= 40-14= 33-16= 31-16= 40-36= 25+16= 33-14= 28+6= 37-8= 44-25= 28+15= 43-9= 31-9= 45-40= 30-16= 23-14= 34-7= 45-26= 36-19= 39-36= 47-45= 40+8= 40-19= 28-6= 28+9= 32-17= 42-25= 37-19= 33-24= 36-18= 23+18= 40-16= 31-15= 40-4= 35+4= 49-6= 41-25= 33-16
12、= 41-16= 50-19= 31-18= 32-30= 41-19= 30-17= 33-12= 32+8= 17+16= 46-38= 30-15= 29-16= 37-18= 31+8= 42-24= 32-16= 33-15= 18+23= 42-35= 45-19= 19+16= 50-15= 28-19= 27+19= 50以内口算练习十二35-23= 40-24= 43-25= 31-27= 40-29= 47-39= 32+19= 28-13= 32-16= 37-10= 33-14= 25-17= 30-16= 33-11= 26-9= 14-4= 48-15= 32-15
13、= 30-15= 39-12= 40-8= 42-3= 20-8= 28-19= 30-8= 28+9= 35-18= 35+4= 30-16= 37-28= 41-7= 32-13= 42-36= 32-24= 32-5= 11+27= 24-19= 28-9= 39-4= 30-15= 38-19= 34-9= 25-8= 42-23= 32-15= 31-17= 36-19= 27-8= 31-16= 41-26= 33-14= 37-8= 28-19= 26-9= 34-9= 43-24= 35-7= 30-16= 30-25= 36-29= 24-5= 24-15= 32-15= 3
14、1-24= 35-19= 21-7= 30-5= 38-9= 33-17= 24-9= 35-8= 32-21= 22-13= 32-15= 21-17= 40-9= 46-10= 37-8= 50-1= 34-6= 41-6= 36-24= 26-17= 32+13= 33-6= 37-8= 48-9= 44-5= 37-15= 34-29= 41-39= 33-24= 35-7= 40-26= 23+8= 36-19= 31-24= 32-28= 31-19= 41-35= 50以内口算练习十三32-18= 22-15= 30-25= 40-19= 50-28= 33-26= 32-23=
15、 40-18= 37+15= 40-18= 41-24= 35-18= 16+18= 31-19= 50-36= 37-30= 42-28= 30-23= 16+27= 33-17= 46-7= 33-22= 32-17= 22+16= 33-14= 50-31= 34-25= 33+15= 47-25= 37-19= 42-6= 31-7= 34-6= 24-9= 50-9= 46-28= 37-19= 34-16= 35+14= 47+2= 40-27= 39-23= 31-28= 46-39= 45-27= 42-29= 21-5= 45-26= 21-18= 22-7= 44-38=
16、36-18= 23-8= 30-18= 21-9= 35-17= 34-19= 34-17= 31-16= 23+29= 29+2= 23+8= 41-25= 36-18= 42-14= 26+5= 43-25= 33+9= 24+17= 29+19= 38-9= 45-4= 37-27= 25+17= 41-22= 27+17= 31-13= 24+18= 35-27= 42-36= 6+38= 9+26= 34-18= 32+13= 41-24= 36-28= 15+8= 22+19= 35-18= 35-30= 6+40= 6+27= 29+18= 35-6= 33+9= 34-9= 1
17、8+27= 25+16= 36-17= 39-9=50以内口算练习十四33-27= 44-19= 19+25= 42-18= 35-17= 28+19= 35-19= 30+16= 17+18= 38+3= 27+15= 47-18= 29+14= 43-29= 27+16= 32-19= 19+26= 18+25= 27+14= 36-18= 28+16= 29+9= 34-17= 40+5= 38-18= 34-19= 48-9= 8+38= 23+19= 31-17= 26+17= 34-12= 41-30= 35+6= 45-18= 26+16= 31-12= 46-29= 40+8=
18、 46-28=45-17= 33-17= 42-18= 37+4= 36-17= 35-18= 41-27= 43-29= 18+25= 30+13= 19+23= 44-27= 17+18= 43-18= 39+5= 46-29= 29+14= 25+18= 47-28= 19+26= 38+6= 24-18= 47-7= 22-13= 35-18= 43-40= 38-24= 12+30= 46-28= 37+5= 26+16= 45-29= 6+35= 42-24= 36+7= 26-18= 35-16= 32-16= 34-25= 48-29=29+13= 22-5= 34+9= 26+17= 32+8= 37-17= 32-10= 27+16= 30+16= 36-17= 19+16= 28+15= 28+17= 34+13= 33-14= 31-12= 41-26= 32-7= 47-39= 36+6= 50以内口算练习十五25+16= 35-19= 19+18= 17+27= 16+28= 33+6= 18+14= 36-12= 18+28= 31-16= 17+19= 30+20= 26+15= 34+17= 41-19= 33-18= 44-36= 42-18= 30+9= 45-27=40-28= 42-34= 50-17= 48-28= 31-1
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