小数乘除法计算题.doc

文档介绍：小数计算题
用竖式计算
- 16
十 7

-9
-15
- 36
- 23
-
12
-7
210-

X -
- — + -
99

X

X
解方程
X+=

=30
x-=
x
-=90
7(x-2)=49 4
X8+2x=36
-
- + =
— =
22 — =12

— =
126-=56
口算
（一）
— =
— =
1— =
1+=
- =
X 8=
— =
— =
+ =
X 10=
X 7=
X 2=
+ =
+ =
+ =
75- 10=
X 7=
5X =
— =
— =
187- 1000=
X 8=
=
x100=
4=
4=
4x =
+=
-=
7200- 800=
+=
-=
-=
+=
600x 500=
+=
（二）
+=
+=
8500- 500=
+=
+=
3500- 70=
+=
7500- 250=
-=
450+780=
-= -5=
330x 9=
-=
-= +=
1-=
+=
+= +4=
4-=
+=
+= += 2.
3x 100=
- =
480 - 40=
- 100=
+=
125x 80=
- 10=
+= 70
x 12=
（三）
=
-=
-=
=
10+=
1-=
=
+=
+=
x 100=
-=
-=
x =
x =
x 0=
10X =
63- 100=
-=
+=
80- 1000=
+=
-=
30 X 100=
-=
+=
+=
5+= 1-=
+=
+=
+= +=
1-=
8- =
+=
+=
（四）
-=
-=
10+=
-=
+=
-=
-=
1-=
-=
-= +=
-=
X 8=
4=
0=
50=
30X =
3=
X 2=
=
2=
=

X 8=