(1) | (2) | (3) | (4) | (5) | (6) |
B | C | B | A | C | A |
图一:12÷2=6
3.14x6 ÷2-12x6÷2
= 3.14x36÷2-12x6÷2
=56.52-36
=20.52
|
图二:(4+10)x4÷2-3.14x4 ÷4
=(4+10)x4÷2-3.14x16÷4
=28-12.56
=15.44
|