Question

計(jì)算下面各題 15 19 ÷ 5 57	13 24 × 28 39	81 82 ÷18
33 35 × 21 11	31 32 ÷ 31 64	9 14 × 10 3
17 42 ÷ 17 28	36÷ 4 9 ．

Answer 1

分析：根據(jù)分?jǐn)?shù)乘法、除法的計(jì)算法則，直接進(jìn)行簡算即可．

解答：解：

15 19 ÷ 5 57 =9	13 24 × 28 39 = 7 18	81 82 ÷18= 9 164
33 35 × 21 11 = 9 5	31 32 ÷ 31 64 =2	9 14 × 10 3 = 15 7
17 42 ÷ 17 28 = 2 3	36÷ 4 9 =81．

點(diǎn)評：此題考查的目的是牢固掌握分?jǐn)?shù)乘法、除法的計(jì)算法則，并且能夠正確熟練地進(jìn)行計(jì)算．