六年级口算题及答案.doc=
14—=,
一 =48,
=160,
+= 5
10—=,
4三20=,
=700,
=
^15=,
=,
= 1,
+=2
=,
420三35 = 12,
25x12=300,
135-=270
3/4+ 1/4=1,
+ 4/9 =22/9,
- 2/3 =7/3,
3/4 - 1/2= 1/4
1/6+ 1/2-1/6 =1/2,
(+)=,
7/8 + 3/8 =5/4
3/10 +1/5 =1/2,
4/5 ・ 7/10 =1/10,
2- 1/6-1/3 =
^17=,
+ 19=,
5・2三1・3=4,
=
= ,
1~5=,
6-12=,
-=
(1+1/2)(1+1/3)(1+1/4)……(1+1/100)
(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
+2-8+2
*4/25*4
-(-)
+198
-202
+301
-99
+-+
-2456*21
-4*
+++
-9036-M8
+
1721*+*
*45-328
2128*+
23.(50-)/
*47+639
-1/6
*-
*+*
+++
-1/2
*+*
-420/12
-*
+30/2+90/6
-1998.
-105*34
+*
(1/2+1/3+1/4)*
(25+4)*4
-4263/21
+
〜13x27
——
+
48. (+ ) -768-32
-^
—768 三 32
**4
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