Question

用適當(dāng)?shù)姆椒ㄓ?jì)算：
22

1

2

×6%+2.75+1

1

3

+1.2．

Answer 1

考點(diǎn)：整數(shù)、分?jǐn)?shù)、小數(shù)、百分?jǐn)?shù)四則混合運(yùn)算

專題：運(yùn)算順序及法則

分析：首先把小數(shù)和百分?jǐn)?shù)化成分?jǐn)?shù)，然后計(jì)算乘法，通分后計(jì)算加法．

解答： 解：22

1

2

×6%+2.75+1

1

3

+1.2
=

45

2

×

3

50

+2

3

4

+1

1

3

+1

1

5

=1

7

20

+2

3

4

+1

1

5

+1

1

3

=4

7+15+4

20

+1

1

3

=5

3

10

+1

1

3

=6

9+10

30

=6

19

30

點(diǎn)評(píng)：考查了運(yùn)算定律與簡(jiǎn)便運(yùn)算，四則混合運(yùn)算．注意運(yùn)算順序和運(yùn)算法則，靈活運(yùn)用所學(xué)的運(yùn)算律簡(jiǎn)便計(jì)算．