6+90= 88-8= 78-70= 7+40=
12-3=
14-7=
8+4=
30+7=
42-2=
50+6=
20-9=
55-50=
36-6=
63-3=
25-5=
77-70=
7+9-8=
64-60+8=
17-9-2=
8+9= 16-7= 20+50= 18-10= 40-7+ 5=
11-5= 60-40= 8+70= 98-90= 30+(28-8)=
68-30= 10+78= 75-5= 3+56= 96-5+4=
45+8= 78-9= 29+2= ( )+6=76 54-(54-50)=
30-7= 60+19= 17+8= 54-( )=4 80+(13+7)=
答:奶奶比兰兰大( )岁。
□○□○□=□( )
(个)
100,90,,,60。
47,57,,77,,97。
○△○○△○○○△。
①14.56﹣6.62+5.44﹣8.38
②×0.8×12.5
③5.9×63+59×3.7
④÷[×(﹣)]