5.44-6.53✖️0.7+8.4简便计算?
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5.44-6.53×0.7+8.4
=5.44+8.4-6.53×1+6.53×0.3
=13.84-6.53+1.959
=7.31+1.959
=7.31+2-0.041
=9.269
=5.44+8.4-6.53×1+6.53×0.3
=13.84-6.53+1.959
=7.31+1.959
=7.31+2-0.041
=9.269
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