4.6×3.26+9.7×6.52简便运算
问题描述:
4.6×3.26+9.7×6.52简便运算
答
4.6×3.26+9.7×6.52
=4.6×3.26+19.4×3.26
=(4.6+19.4)×3.26
=24×3.26
=78.2419.4怎么来的9.7×6.52=9.7×2×3.26=19.4×3.26