Question

用適當?shù)姆椒ㄓ嬎悖?br />22

1

2

×6%+2.75+1

1

3

+1.2．

Answer 1

考點：整數(shù)、分數(shù)、小數(shù)、百分數(shù)四則混合運算

專題：運算順序及法則

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

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

點評：考查了運算定律與簡便運算，四則混合運算．注意運算順序和運算法則，靈活運用所學(xué)的運算律簡便計算．