39-(14-5)= 8+(50-6)= 20-(1+6)= 40+6-7=
姓名:________ 得分:__________ 时间:____ 分____秒
12+60= 93-60= 34+60= 38-20= 26+50= 47+10= 35+50= 88-10= 66-20= 20+10= 90-70= 98-90= 83-60= 11+60= 71-50= 50-40= 76-60= 87-10= 97-10= 22+40= 72-70= 57-30= 12+10= 40+40= 80-60= 42+50= 94-10= 60-10= 23+30= 77-70= 33+30= 98-50= 50-40= 47-30= 75-50= 67-40= 91-10= 65-40= 78-40= 63+30= 27+34= 100-28= 21+55= 59-5=
89-67= 37+47= 44-31= 2+75=
5+48= 42+2= 59+3= 7+5=
96-43= 48-7= 16-14= 81+18=
92-63= 17+1= 30+41= 92-83=
48-47= 50+18= 67+12= 32-1=
62+7+3= 89-5-7= 63+3+7= 34-2+9=
65+7-60= 65-(7+13)= 74+8-80= 84+9-90= 4+28+40= 60+30-7= 25+(30-10)= 17+(15-5)=
40+(36-10)= 50+14+20= 40+(34-6)= 84+2+8=