3.3*3.4+3.4*3.5+35.*3.6+3.6*3.7简算

问题描述:

3.3*3.4+3.4*3.5+35.*3.6+3.6*3.7简算

=(33*35+34*35+35*36+35*37-33+37)/100
=(4*35*35+4)/100
=4904/100
=49.04