Question

算一算 9 14 × 7 27	20× 3 5	4 21 × 3 16
7 8 ×32	5 14 ×42	5 24 × 3 10 ．

Answer 1

分析：本題根據(jù)分?jǐn)?shù)乘法的運(yùn)算法則計(jì)算即可．

解答：解：

9 14 × 7 27 = 1 6	20× 3 5 =12	4 21 × 3 16 = 1 28
7 8 ×32=28	5 14 ×42=15	5 24 × 3 10 = 1 16 ．

點(diǎn)評：完成分?jǐn)?shù)乘法算式時(shí)要細(xì)心，注意約分．