2.25×445+7712×0.48-(9817×223+217×923)．-数学

题目简介

2.25×4

+77

×0.48-(9

)．

题型：解答题难度：中档来源：不详

2.25×4class="stub"4

+77class="stub"1

×0.48-（9class="stub"8

×class="stub"2

+class="stub"2

×class="stub"9

），
=2.25×4.8+77.5×0.48-（9class="stub"8

×class="stub"2

+class="stub"9

×class="stub"2

），
=2.25×4.8+77.5×4.8-（9class="stub"8

+class="stub"9

）×class="stub"2

，
=（2.25+7.75）×4.8-10×class="stub"2

，
=48-class="stub"20

，
=47class="stub"3

．