Question

口算 69× 5 23 =	3 5 ÷ 5 3 =	4 5 × 2 9 =	5 9 ÷ 5 18 =
0.74+ 2 5 =	2 1 5 - 1 2 =	7 20 × 5 7 =	5 14 ×21=
5 6 ×0÷ 5 6 =	12×（ 1 4 + 1 3 ）=

Answer 1

分析：根據分數加減乘除法的計算方法進行計算即可．

解答：

解：69× 5 23 =15	3 5 ÷ 5 3 = 9 25	4 5 × 2 9 = 8 45	5 9 ÷ 5 18 =2
0.74+ 2 5 =1.14	2 1 5 - 1 2 =1.7	7 20 × 5 7 = 1 4	5 14 ×21=7.5
5 6 ×0÷ 5 6 =0	12×（ 1 4 + 1 3 ）=7

點評：本題主要考查了分數四則運算的計算方法．