Question

直接寫得數(shù)．

3 4 ×16=	1.25× 1 3 ×8=	9× 6 7 +9× 1 7 =
12÷ 3 5 =	5 7 × 2 3 ÷ 5 7 =	1 2 × 1 3 ÷ 1 2 × 1 3 =
28×（  3 7 + 1 4 ）=	16×( 1 4 -0.25)=	1  5 7 × 7 12 =

Answer 1

分析：根據(jù)分數(shù)的運算法則進行計算．

解答：

解： 3 4 ×16=12	1.25× 1 3 ×8= 10 3	9× 6 7 +9× 1 7 =9
12÷ 3 5 =20	5 7 × 2 3 ÷ 5 7 = 2 3	1 2 × 1 3 ÷ 1 2 × 1 3 = 1 9
28×（ 3 7 + 1 4 ）=19	16×( 1 4 -0.25)=0	1 5 7 × 7 12 =1

點評：考查了分數(shù)四則混合運算的計算法則，能計算的要簡算．