firelavahd
firelavahd
04-02-2016
Mathematics
contestada
26.5 - 9.3 using compensation
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Аноним
Аноним
04-02-2016
26.5 - 9.3 = ?
26 - 9 = 17
.5 - .3 = .2
17 + 0.2 = 17.2
Answer : 17.2
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Leader
Leader
04-02-2016
[tex]26.5 - 9.3 = (26 + 0.5) - (9 + 0.3)\\\\= 26 + 0.5 -9 -0.3\\\\=26 - 9 + 0.5 -0.3\\\\=17 + 0.5-0.3\\\\=17 + 0.2\\\\=\boxed{\bf17.2}}[/tex]
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