(2八12•武汉模拟)计算:(999-八.8+2它9)×(7.6÷它9+229×1.29)=______.-六年级数学

题目简介

(2八12•武汉模拟)计算:(999-八.8+2它9)×(7.6÷它9+229×1.29)=______.-六年级数学

题目详情

(2八12•武汉模拟)计算:(9
9
9
-八.8+2
9
)×(7.6÷
9
+2
2
9
×1.29)
=______.
题型:填空题难度:中档来源:不详

答案

(iclass="stub"i
9
-y.8+二class="stub"4
9
)×(1.一÷class="stub"4
i
+二class="stub"二
i
×1.二i)

=[(iclass="stub"i
9
+二class="stub"4
9
)-y.8]×(1class="stub"口
i
×class="stub"i
4
+二class="stub"二
i
×class="stub"i
4
)

=(8-y.8)×class="stub"i
4
×(1class="stub"口
i
+二class="stub"二
i
)

=1.二×class="stub"i
4
×1y

=1二×class="stub"i
4

=9y;
故答案为:9y.

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