50以内口算天天练100题打印
7+8+4= 8+2+9= 20+8-6= 30-20-10= 17+3-5= 11+1+15=
17+3+6= 19+11-7= 9+21-7= 20+12+6= 30+6-3=
32+8-7= 23+24= 43+5= 22+22= 15+30= 13+31= 16+30= 35-12= 47-15= 28-14= 34+10= 22+15= 36+11= 22+14= 23+17= 35+14= 27+13= 31-11= 37-12= 49-15= 24+20= 25+22= 27+10= 13+30= 34+16= 17+32=
13+13= 27+10= 49-19=
22+13= 32+10= 44-30=
12+31= 11+31= 20-20=
36+12= 22+12= 39-6=
18+20= 44-11= 38-8=
23-10= 24-14= 46-11=
37-11= 27-10= 27-11=
37-21= 48-17= 35-12=
16+23=
48-32= 38-21= 48-32= 38-31= 28-13=
19-10= 28-17= 36-21= 28-17= 37-12=
46-15= 46-22= 36-22= 27-22=
35-11= 12+24= 42-20= 31+11= 46-11= 39-12= 38-16= 49-18= 23+11= 21+19= 36+10= 25+5= 18+12= 34+12= 32+8= 21+7= 44-13= 38-21=
38+11=
25-14=
48-17=
50-40=
33-12=
38-11=
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