计算:4113×34+5114×45+6115×56=______.-数学

题目简介

计算:4113×34+5114×45+6115×56=______.-数学

题目详情

计算:41
1
3
×
3
4
+51
1
4
×
4
5
+61
1
5
×
5
6
=______.
题型:填空题难度:偏易来源:不详

答案

41class="stub"1
3
×class="stub"3
4
+51class="stub"1
4
×class="stub"4
5
+61class="stub"1
5
×class="stub"5
6

=(40+class="stub"4
3
)×class="stub"3
4
+(50+class="stub"5
4
)×class="stub"4
5
+(60+class="stub"6
5
)×class="stub"5
6

=40×class="stub"3
4
+class="stub"4
3
×class="stub"3
4
+50×class="stub"4
5
+class="stub"5
4
×class="stub"4
5
+60×class="stub"5
6
+class="stub"6
5
×class="stub"5
6

=30+1+40+1+50+1,
=123.
故答案为:123.

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