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\(a,14,7\times4+52,8+14,7\times6+47,2\)
\(=14,7\left(4+6\right)+\left(52,8+47,2\right)\)
\(=147+100\)
\(=247\)
\(b,\left(675,75:25+2255:11\right)-216,8\)
\(=\left(27,03+205\right)-216,8\)
\(=232,03-216,8\)
\(=15,23\)
hok tốt!
a,14,7×4+52,8+14,7×6+47,2 b,(675,75:25+2255:11)−216,8
=14,7(4+6)+(52,8+47,2) =(27,03+205)−216,8
=147+100 =232,03−216,8
=247 =15,23
hok tốt!
kb nha
a/\(1248:12-2,5\times4+6,03.\)
\(=104-10+6,03\)
\(=94+6,03=100,03\)
b/\(\left(\frac{2}{3}+\frac{5}{7}-\frac{1}{3}\right)\times\frac{7}{11}+3\frac{1}{3}.\)
\(=\left(\frac{29}{21}-\frac{1}{3}\right)\times\frac{7}{11}+3\frac{1}{3}\)
\(=\frac{22}{11}\times\frac{7}{11}+3\frac{1}{3}\)
\(=\frac{2}{3}+3\frac{1}{3}\)
\(=\frac{2}{3}+\frac{10}{3}\)
\(=\frac{12}{3}=4\)
mk bt làm mỗi 1 câu thui thông cảm
B) 37 x 62 + 37 x 38
37 x ( 62+38)
37 x 100
3700
hok tốt
a, 59 + 532 + 267 + 268 + 733
= 59 + ( 532 + 268 ) + ( 267 + 733 )
= 59 + 800 + 1000
= 859 + 1000
= 1859
b, 37 × 62 + 37 × 38
= 37 × ( 62 + 38 )
= 37 × 100
= 3 700
c, ( 1356 + 845 ) - ( 356 + 645 )
= 1356 + 845 - 356 - 645
= ( 1356 - 356 ) + ( 845 - 645 )
= 1000 + 200
= 1 200
\(A=\frac{10,07\times12+20,14\times141-20,14\times47}{1007\div0,5}\)
\(A=\frac{10,07\times12+10,07\times2\times141-10,07\times2\times47}{2014}\)
\(A=\frac{10,07\times\left(12+2\times141-2\times47\right)}{2014}\)
\(A=\frac{10,07\times200}{2014}\)
\(A=\frac{2014}{2014}=1\)