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KD
2
B
5 tháng 1 2022
43 679 + 13 487 = 75 166
246 762 -94 874 = 151 888
345 x 205 = 70 725
117 856 : 58 = 2 032
không!
QA
1
13 tháng 7 2017
+/ \(\frac{16.25+44.100}{29.96+142.48}=\frac{16.25+4.11.100}{29.96+71.2.48}\) +/\(\frac{1996.1995-996}{1000+1996.1994}=\frac{\left(1995+1\right).1995-996}{1000+1996\left(1995-1\right)}\)
\(=\frac{400+400.11}{29.96+71.96}=\frac{400\left(1+11\right)}{96\left(29.71\right)}\) \(=\frac{1995.1995+1995-996}{1000+1996.1995-1996}\)
\(=\frac{400.12}{96.2059}=\frac{50.96}{96.2059}=\frac{50}{2059}\) \(=\frac{1995\left(1995+1\right)-996}{1996.1995-996}=1\)
T i c k cho chị nha ^^ Lát chị làm tiếp cho giờ chị đi ăn cơm đã ^.<
13 tháng 7 2017
\(\frac{1996.1995-996}{1000+1996.1994}=\frac{\left(1995+1\right).1995-996}{1996\left(1995-1\right)+1000}\)
\(=\frac{1995.1995+1995-996}{1996.1995-1996+1000}\)
\(=\frac{1995\left(1995+1\right)-996}{1995.1996-996}\)
\(=\frac{1995.1996-996}{1995.1996-996}=1\)
DV
5
18 tháng 7 2019
\(\frac{637\times527-189}{526\times637+448}\)
\(=\frac{637\times\left(526+1\right)-189}{526\times637+448}\)
\(=\frac{637\times526+637-189}{526\times637+448}\)
\(=\frac{637\times526+448}{526\times637+448}\)
\(=1\)
18 tháng 7 2019
\(\frac{677\times874+251}{678\times874-623}\)
\(=\frac{677\times874+251}{\left(677+1\right)\times874-623}\)
\(=\frac{677\times874+251}{677\times874+874-623}\)
\(=\frac{677\times874+251}{677\times874+251}\)
\(=1\)
NB
1
TM
18 tháng 7 2019
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TQ
3
18 tháng 7 2019
c) 637 x 527 - 189=335510 / 526 x 637 + 448=335510
d) 677 x 874 + 251 =591949 / 678 x 874 - 623=591949
học tốt
18 tháng 7 2019
c, 637x527-189/526x637+448=335918,116
d, 677x874+251/678x874-623=91398,5605
DT
5
TM
18 tháng 7 2019
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3 tháng 7 2018
103 + 456 = 559
567 + 345 - 327 = 585
45 x 66 - 56 + 90 = 3004
NT
2
=27 138 433
TL
= 27138433
~HT~