56÷8=
9×5=
6÷6=
5×7=
1×8=
8×3=
42÷7=
47+15=
34+29+26= 67-28+14=
36+25-32= 100-15-48=
4×5=
24÷3=
6×8=
30÷6=
23+32=
38+42=
99-78=
45÷9+6=
8×8-8=
3×8+38=
写出计算过程:
问:这两条绳子原来的长度是多少厘米?