Question

直接寫出得數(shù)．

20× 2 5 =	1 3 ÷ 3 8 =	8 21 × 7 16 =	1 6 + 2 5 =	3 4 ÷6=	3 4 ×12=
7 24 × 6 14 =	4 9 ÷ 3 8 =	1 8 + 1 9 =	2 3 ×9=	0÷ 3 2 =	12× 5 6 =
3 4 ×0=	5 6 ÷ 6 5 =	8 25 ÷ 4 5 =	8 3 ÷2=	1 7 × 5 7 =	4 25 ÷4=

Answer 1

考點：分?jǐn)?shù)乘法,分?jǐn)?shù)的加法和減法,分?jǐn)?shù)除法

專題：計算題

分析：運用分?jǐn)?shù)乘除法的計算法則進(jìn)行計算即可．

解答：

解：20× 2 5 =8	1 3 ÷ 3 8 = 8 9	8 21 × 7 16 = 1 6	1 6 + 2 5 = 17 30	3 4 ÷6= 1 8	3 4 ×12=9
7 24 × 6 14 = 1 8	4 9 ÷ 3 8 =1 5 27	1 8 + 1 9 = 17 72	2 3 ×9=6	0÷ 3 2 =0	12× 5 6 =10
3 4 ×0=0	5 6 ÷ 6 5 = 25 36	8 25 ÷ 4 5 = 2 5	8 3 ÷2=1 1 3	1 7 × 5 7 = 5 49	4 25 ÷4= 1 25

點評：用分?jǐn)?shù)表示計算的結(jié)果的時候，注意要化成最簡分?jǐn)?shù)．