简便运算如下:
12x(0.7x0.8)
=12x0.01x(7x8)
=(10+2)x0.1x0.1x(50+6)
=(1+0.2)x5.6
=5.6+1.12
=6.72
希望能帮到你!
计算题目
=12×0.56
=6.72
结果6.72
12×(0.7×0.8)
=12×0.56
=10×0.56+2×0.56
=5.6+1.12
=6.72
=12x0.56
=(10+2)x0.56
=10x0.56+2x0.56
=5.6+1.12
=6.72
12ⅹ(0.7x0.8)=10ⅹ0.56+2x0.56=5.6+1.12=6.72