3.7x33+99x2.6用简便方法计算?

2025-03-17 14:30:57
推荐回答(3个)
回答1:

3.7x33+99x2.6
=(3x1.3-0.2)x33+99x2.6
=99x1.3-6.6+99x2.6
=99x(1.3+2.6)-6.6
=(100-1)x(4-0.1)-6.6
=400-4-10+0.1-6.6
=400.1-20.6
=379.5

回答2:

3.7x33+99x2.6
=3.7x33+33x3x2.6
=(3.7+7.8)x33
=11.5x33
=379.5

回答3:

简便计算过程方法如下
解:3.7×33+99×2.6
=122.1+257.4
=379.5