Question

直接寫(xiě)出得數(shù)． 5 18 ×9=	1 3 × 1 4 =	28× 2 7 =	20×20%=
5 11 ÷5=	4 9 ÷ 1 3 =	2 7 ÷ 3 7 =	1 5 × 1 5 =
6× 1 10 × 5 6 =	5× 1 9 + 8 9 ×5=	2 9 ÷ 1 3 ÷ 2 3 =

Answer 1

考點(diǎn)：分?jǐn)?shù)的四則混合運(yùn)算

專(zhuān)題：運(yùn)算順序及法則

分析：根據(jù)分?jǐn)?shù)四則運(yùn)算的計(jì)算法則以及混合運(yùn)算的順序進(jìn)行計(jì)算即可，5×

1

9

+

8

9

×5可利用乘法分配律簡(jiǎn)算．

解答： 解：

5 18 ×9=2.5	1 3 × 1 4 = 1 12	28× 2 7 =8	20×20%=4
5 11 ÷5= 1 11	4 9 ÷ 1 3 = 4 3	2 7 ÷ 3 7 = 2 3	1 5 × 1 5 = 1 25
6× 1 10 × 5 6 = 1 2	5× 1 9 + 8 9 ×5=5	2 9 ÷ 1 3 ÷ 2 3 =1

點(diǎn)評(píng)：此題考查了分?jǐn)?shù)四則運(yùn)算的計(jì)算法則的運(yùn)用．