文档介绍：--------------------------校验:_____________-----------------------日期:_____________一年级下册口算练****题(1000道) 12+6=         29-7=          33+2=3+40=        15+4= 23+5= 37+1=29-3=          38-3=         15-4= 18-2=          30+8=           43+1=86+2= 70+3= 30-2=       72-2=          66-4=          39-2=       20-9= 53+5=35+2=          39-4=          8+50=         20-1= 40+6=          62+7=          89-5=63+3=        34-2= 50-4=          11+2=53-3= 60+8= 80-7=2+4=          26-5=         84+4=          35-10=       71+9= 36+3=  58+30=28-7=87-10=    80-6= 11+9=  80-3=  95-4=   64+3=98-4= 25+7=  62-2=     83+5=     83+10= 10+8= 56+20=64+6=   65+3=    15-3=  30-3= 32+6=         29-7=35+2=73+4=25+4=43+5=87+10=39-3=         48-30=95-40=81-2=         60+8=          39+10=     76+10=      70+30=48-9=        47-8=52-4=          43-8=       68-9= 40-2=       27-9=          32-4=          41-2=38-9= 50-8=       63-9=          37-8=          56-20=      88-9=75-9=       92-3=          42-7=          71-6=       58-10=47-8=        26-7=52-3=          69-10=      63-5=80-2=        36-9=          78-4=          65-8=       99-9=72-2=       45-9=          86-8=          96-2=       24-9=40-2=        46-9=         43-4=          18-2=       38-8=35+5=          85+2=         59-4=        78+10=       82-5=64+6=32+7=49-5=63+3=        84-2=60-4=11+20=       45-3=         30+8=       60-7=25+4=          36-5=