42+ 18=60 (Ben)

60×3= 180 (Ben)

A: I bought 180 fairy tales.

26、

3× 14=42 (tree)

42- 16=26 (tree)

I bought 26 pine saplings.

27、

56-8=46 (m)

46÷3= 18 (m)

Answer: If the fences on each side of the triangular flower garden are equal in length, the length of each fence is18m.

28

First grade? Second grade? Third grade? Grade?Four

30? Frame? 45? 6 1? Frame? 86 pictures

Level 3: 30+45- 14=6 1.

Grade 4: 6 1×2= 122.

122-36=86.