(个)
=
1+2= 0+0= 7-0= 4+3=
5+2= 5-0= 6-3= 4-4=
6-2= 2+3= 3+□=7 □+□=6
11-5= 12-2= 13-4= 15-9= 6+6=
9+3= 8+5= 18-6= 9+4= 20-5=
4+=11 +5=15 9+=16
+1=12 6+=13 +7=7
7+=16 5+=13 +4=14
□○□=□( ) (够□ 不够□)
÷3= 1+40%=
:8= 0.62= 0.8×0.25= 10-0.01= ( )×0.4=1