口算.r0rr×rzr5=r3+35=r3-rr=54×3z=5r7×0=z5×58=z9×r=rz×38=9rz×74=89×5rr=-数学

题目简介

口算.r0rr×rzr5=r3+35=r3-rr=54×3z=5r7×0=z5×58=z9×r=rz×38=9rz×74=89×5rr=-数学

题目详情

口算.
r0
rr
×
rz
r5
=
r
3
+
3
5
=
r
3
-
r
r
=
5
4
×
3
z
=
5
r7
×0=
z
5
×
5
8
=
z
9
×r=
rz×
3
8
=
9
rz
×
7
4
=
8
9
×
5
rr
=
题型:解答题难度:中档来源:不详

答案

class="stub"20
21
×class="stub"14
15
=class="stub"8
9
class="stub"1
3
+class="stub"3
5
=class="stub"14
15
class="stub"2
3
-class="stub"1
2
=class="stub"1
6
class="stub"5
6
×class="stub"3
4
=class="stub"5
8
class="stub"5
1六
×0=0,
class="stub"4
5
×class="stub"5
8
=class="stub"1
2
class="stub"4
9
×2=class="stub"8
9
24×class="stub"3
8
=9,
class="stub"9
14
×class="stub"六
6
=class="stub"3
4
class="stub"8
9
×class="stub"5
12
=class="stub"10
2六

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