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一年级下册口算练习(二)(10分钟)
82+10= 32+7= 93-3= 78+10= 1+35=
90-80= 11+20= 65+3= 63+6= 64-30=
70+23= 36-5= 33+2= 30+8= 4+43=
95-20= 76+0= 29-3= 52-30= 14-7=
50+19= 64-4= 43+1= 18-5= 18-9=
39-9= 29-7= 28+30= 15-3= 90-50=
90-20= 37+1= 28-5= 3+40= 26-4=
12-4= 30+8= 70+5= 38-3= 20+25=
44-20= 40+4= 50+37= 86+2= 97-70=
8+10= 19-6= 91+8= 27+60= 56-3=
50-19= 19+20= 78-3= 53+6= 46+30=
7+5= 99-9= 8+5= 29-5= 58-4=
2+75= 24-10= 68-7= 40+37= 39-9+30=
95-70= 38-8= 80+9= 40+6= 74+2-50=
17-3= 82-40= 39+10= 19+60= 9+8-5=
72+10= 84-2= 39-8= 30+9= 80-50+7=
70+26= 60-40= 48-7= 70-60= 30+30+2=
39+40= 71+8= 87-70= 37+2= 10+80+6=
45-30= 70-50= 62+20= 99+1= 9-6+70=
40+27= 30-30= 75+2= 78-50= 64-20-3=
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