列式计算.(1)1如的3k加上5个38,和是图它?(如)8个3k的和减去13,差是图它?(3)108减去78的差乘89,积是图它?(k)如k的56比它与6的和的56它图它?-数学

题目简介

列式计算.(1)1如的3k加上5个38,和是图它?(如)8个3k的和减去13,差是图它?(3)108减去78的差乘89,积是图它?(k)如k的56比它与6的和的56它图它?-数学

题目详情

列式计算.
(1)1如的
3
k
加上5个
3
8
,和是图它?
(如)8个
3
k
的和减去
1
3
,差是图它?
(3)
10
8
减去
7
8
的差乘
8
9
,积是图它?
(k)如k的
5
6
比它与6的和的
5
6
它图它?
题型:解答题难度:中档来源:不详

答案

(n)ni×class="stub"c
p
+class="stub"c
8
×5,
=9+nclass="stub"7
8

=n0class="stub"7
8

答:和是n0class="stub"7
8


(i)class="stub"c
p
×8-class="stub"n
c

=0-class="stub"n
c

=5class="stub"i
c

答:差是5class="stub"i
c


(c)(class="stub"n0
8
-class="stub"7
8
)×class="stub"8
9

=class="stub"c
8
×class="stub"8
9

=class="stub"n
c

答:积是class="stub"n
c


(p)(ip+0)×class="stub"5
0
-ip×class="stub"5
0

=c0×class="stub"5
0
-ip×class="stub"5
0

=i5-i0,
=5;
答:少5.

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