脱式计算(能简算的要简算)(1)29+12÷4f+r1&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;(2)11r÷7+17×t1r(r)12f×(ft

题目简介

脱式计算(能简算的要简算)(1)29+12÷4f+r1&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;(2)11r÷7+17×t1r(r)12f×(ft

题目详情

脱式计算(能简算的要简算)
(1)
2
9
+
1
2
÷
4
f
+
r
1
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;
(2)
1
1r
÷7+
1
7
×
t
1r

(r)
12
f
×(
f
t
+
r
4
题型:解答题难度:中档来源:不详

答案

(1)class="stub"2
+class="stub"1
2
÷class="stub"v
z
+class="stub"3
2

=class="stub"2
+(class="stub"1
2
×class="stub"z
v
+class="stub"3
2
)

=class="stub"2
+(class="stub"z
2
+class="stub"3
2
),
=class="stub"2
+1,
=1class="stub"2


(2)class="stub"2
13
÷7+class="stub"1
7
×class="stub"6
13

=class="stub"2
13
×class="stub"1
7
+class="stub"1
7
×class="stub"6
13

=class="stub"1
7
×(class="stub"2
13
+class="stub"6
13
)

=class="stub"1
7
×class="stub"1v
13

=class="stub"2
13


(3)class="stub"12
z
×(class="stub"z
6
+class="stub"3
v
),
=class="stub"12
z
×class="stub"z
6
+class="stub"12
z
×class="stub"3
v

=2+1class="stub"v
z

=3class="stub"v
z

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