Question

（2007?長(zhǎng)沙）

口算． 88-55=	199+65=	0.8×0.9=	3.2÷0.4=
7 15 ×60=	80÷ 1 80 =	1 2 - 1 3 =	6 7 + 1 7 - 3 14 =

Answer 1

分析：本題中包含有整數(shù)加法、減法，小數(shù)乘法、除法、分?jǐn)?shù)乘法、加法、減法等題目，分別根據(jù)它們的計(jì)算法則進(jìn)行計(jì)算即可．

解答：解：88-55=33        199+65=264         0.8×0.9=0.72        3.2÷0.4=8

7

15

×60=28         80÷

1

80

=6400        

1

2

-

1

3

=

1

6

           

6

7

+

1

7

-

3

14

=

11

14

點(diǎn)評(píng)：完成口算題目要細(xì)心，據(jù)計(jì)算法則快速準(zhǔn)確的得出答案．