简便运算,6.8×16.8﹢19.3×3.2
问题描述:
简便运算,6.8×16.8﹢19.3×3.2
答
6.8×16.8+19.3×3.2
=6.8×16.8+16.8×3.2+2.5×3.2
=16.8×(6.8+3.2)+2.5×4×0.8
=16.8×10+10×0.8
=168+8
=176