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(要用运算定律)46.3X0.56+5.38X5.6-0.05611X22+0.22X3300+330x4.4

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/07 17:18:40
(要用运算定律)
46.3X0.56+5.38X5.6-0.056
11X22+0.22X3300+330x4.4
46.3X0.56+5.38X5.6-0.056
=46.3X0.56+53.8X0.56-0.56×0.1
=0.56×﹙46.3+53.8-0.1﹚
=0.56×100
=56
11X22+0.22X3300+330x4.4
=11X22+22×33+33×2×22
=22×﹙11+33+66﹚
=22×110
=2420