Question

直接寫得數(shù) 4 5 ×2=	5 12 × 9 10 =	2 3 + 3 4 =	6 11 - 1 3 =
3 4 × 7 6 ×0=	1 6 + 5 6 × 1 5 =	2 3 + 1 2 =	5 9 ÷ 1 6 =
20× 3 5 =	0.36÷0.6=	4 7 - 1 2 =	4- 4 9 - 5 9 =

Answer 1

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

專題：計(jì)算題

分析：根據(jù)分?jǐn)?shù)四則混合運(yùn)算的順序，按照分?jǐn)?shù)四則運(yùn)算的計(jì)算法則，直接進(jìn)行口算即可．

解答： 解：

4 5 ×2=1 3 5	5 12 × 9 10 = 3 8	2 3 + 3 4 =1 5 12	6 11 - 1 3 = 7 33
3 4 × 7 6 ×0=0	1 6 + 5 6 × 1 5 = 1 3	2 3 + 1 2 =1 1 6	5 9 ÷ 1 6 =3 1 3
20× 3 5 =12	0.36÷0.6=0.6	4 7 - 1 2 = 1 14	4- 4 9 - 5 9 =3．

點(diǎn)評(píng)：此題考查的目的是理解掌握分?jǐn)?shù)四則混合運(yùn)算的順序以及它們的計(jì)算法則，并且能夠正確熟練地進(jìn)行口算，提高口算能力．