(只)
14-4=
4+8=
10+5=
5+9=
2+8=
9+9=
5+8=
9-3=
9+7=
0+9 =
7-2=
8+3=
3+3+3=
17-7-8=
15-10+7=
9-2+7=
14+1=
6+5=
11-1=
17-3=
7+5=
18-8=
19-3=
19-12=
7+8=
6+7=
17-0=
19-5=
14-4=
12-10=
3+16=
9-2+8=
6+7-10=
9+6-12=
17-7+3=
20+5-5=
7+( )=12
( )+5=13
9+( )=16
7+( )=11-( )
原来有多少个松果?
比多个。
比少个。
1+2=
3+2=
2+2=
0.25×28= 500×1%= 0.81× = 0.32-0.22=
8×4÷8×4= 1÷3× = 0.8÷0.01= 98÷22=