口算练习 1 10+8= 16-8= 5+8= 7+4= 12-5= 2+10= 6+8= 6+6= 2+9= 18-9= 8+4= 15-6= 8+4= 7+7= 16-8= 12-5= 9+7= 15+3= 5+6= 11-3= 3+6= 9+2= 14-9= 18-9= 13-7= 8+10= 10+10= 6+6= 11+6= 16-16= 口算练习 2 5+8= 16-8= 13+7= 11-9= 11-3= 14+5= 4+7= 18-8= 12-9= 19-9= 3+10= 17-7= 14+6= 12+8= 20-20= 14-7= 15-6= 4+9= 9+9= 10-3= 13-8= 11-3= 5-5= 19-9= 6+6= 12+4= 14-6= 13-7= 11-9= 3+14= 口算练习 3 15-2= 3+16= 12+3-9= 12-9= 16-8= 2+8-6= 17-6= 12-3= 6-6+3= 6+9= 11-3= 7+8-9= 3+4+9= 11-7= 4+8-3= 12+3+5= 6+9-5= 9+3-2= 20-10+3= 2+9-6= 15-6+3= 14-6+8= 12+6-8= 13+7-6= 18-5+6= 3+7+8= 19-3+4= 10-1+15= 7+8-4= 20-20+8= 练习四 10+50= 30+30= 60+30= 30+40= 80-60= 90-60= 30+70= 50+9= 50-40= 20+80= 7+20= 20+80= 40-30= 60+8= 30-30= 90+10= 50+50= 50-50= 40+8= 70+20= 9+40= 60+40= 10+40= 9+30= 50-50= 90+4= 5+60= 10+90= 30+8= 40+60= 练习六 67-6= 34+2= 18+1= 38-6= 26+3= 19-9= 12+6= 75+3= 5+42= 38-8= 84+3= 18-4= 24+5= 26+1= 7+31= 32-2= 2+33= 8+20= 18+2= 14+5= 88+1= 95+4= 2+64= 87-5= 29-3= 3+52= 48+1= 47-6= 4+15= 9+50= 练习五 52+30= 42+50= 28+60= 36+20= 50+50= 90+8= 85+10= 36-20= 24+70= 99-90= 49-40= 36+40= 19+50= 83-60= 84-80= 48-30= 78+2026+70 = = 49+50 80-40= 36+40= 55-50= 42-40 27+20= 64-60= 88-80= 49-20= 87-50= 76+10 76-70= 练习七 42+25= 21+12= 84-33= 36+42= 46-30= 27+32= 76-25= 42-25= 68-53= 36+12= 46+32= 26-14= 95-42= 23+52= 99-45= 89+10= 55-42= 36+63= 34+24= 6+52= 45+54= 16+31= 27-15= 72+13= 84+1327+619+50= = = 25+61= 22+36= 16+82= 练习十 25+35= 36+44= 45+17= 28+23= 66+27= 58+43= 42+19= 39+25= 37+19= 26+14= 17+25= 67+23= 35+47= 34+48= 16+14= 15+75= 78+13= 38+56= 74+26= 29+16= 46+5= 63+8= 36+14= 20+38= 4+27= 45+2966+37 = = 58+13= 48+52= 24+49= 练习八 35+41= 25+34= 68+11= 63-21= 92+6= 76+20= 82+7= 34+23= 34+34= 36+23= 86+13= 45+54= 82-61= 76-36= 16+61= 70+10-50= 54+42-36= 80-50+30= 35+60-40-= 90-50+34= 34+15-36= 25+23-12= 76-36-20= 30+8-20= 58-26-10= 练习十一 44-6= 32-9= 43-4= 37-9= 41-3= 45-6= 62-3= 35-9= 76-8= 78-9= 24-6= 72-6= 67-8= 89-5= 84-6= 67-9= 26-9= 74-7= 54-6= 76-7= 75-8= 85-6= 46-8= 76-9= 23-5= 67-8= 36-8= 23-9= 61-2= 34-8= 练习九 76+4= 4+58= 54+4= 5+36= 22+16= 46+6= 37+9= 36+7= 7+33= 21+40= 6+74= 33+7= 56+4= 5+66= 66+4= 48+3= 30+16= 59+1= 62+13= 53+8= 99+1= 7+85= 42+8= 5+66= 62+8= 18+6= 43+9= 46+8= 48+9= 6+48= 练习十二 40-23= 82-37= 97-40= 76-18= 63-48= 30-27= 53-25= 32-25= 60-18= 66-23= 71-43= 90-27= 66-37= 62-54= 87-39= 72-49= 73-56= 52-33= 41-37= 42-33= 61-32= 33-16= 61-44= 51-38= 50-27= 70-26= 63-45= 66-39= 85-40= 76-39= 20 20