竖式计算 注意进位得1 注意退位得点

28+34+23= 25+34+30= 45+36+18= 24+51+15=

46+25+17= 19+40+30= 30+5+64= 45+9+36=

37+28+19= 24+45+30= 55+30+8= 21+30+39=

54+20+16= 48+36+5= 15+39+36= 51+37+9=

7+59+20= 17+18+64= 51+30+9= 28+29+26=

19+55+25= 24+48+17= 24+21+45= 26+40+8=

85-40-26= 81-7-70= 67-25+28= 39+8-20=

90-58-24 67-25-28= 56+34-20= 56+8-20=

72-6-40= 70-23-35= 78-24+39= 18+8-20=

56-12-17= 78-24-39= 70-23+45= 69+30-45=

40-23-12= 98-28-9= 37+10-5= 26+40-8=

36-4-32= 71-26-7= 74+6-80= 65+18-39=

71-65+43= 28+43-24= 17+6-8= 75+9-73=

24+51-19= 23+41-39= 43-8+30= 28+4-24=

30-21+39= 98-37+16= 50+27-9= 70-4+18=

45+36-9= 90-11+32= 42-8+35= 7+26-18=

35-16+39= 31+52-17= 46-39+7= 82-7+13=

45-9+15= 96-60+24= 27+50-9= 20+34-49=