3.14×12×3/4×12简便运算
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3.14x12x3/4x12
=3.14x9x12
=3.14x(10-1)x12
=(31.4-3.14)x12
=27.26x(10+2)
=272.6+54.52
=327.12
=3.14x9x12
=3.14x(10-1)x12
=(31.4-3.14)x12
=27.26x(10+2)
=272.6+54.52
=327.12
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3.14x12x3/4x12
=3.14x9x12
=3.14x(10-1)x12
=(31.4-3.14)x12
=28.26x(10+2)
=282.6+56.52
=339.12
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