46,75 : 9,3 x 24,5
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bài 1:
a)=8.5025
b)=123.1586022...
bài 2
a)x=5.255
b)x=394.85
c)x=14.075
d)x=617.5
\(\)Bài 1:
\(a)2,45\times\left(3,45+5,6\right)-13,67\)
\(=2,45\times9,05-13,67\)
\(=22,1725-13,67\)
\(=8,5025\)
\(b)46,75:\left(12,45-3,15\right)\times24,5\)
\(=46,75:9,3\times24,5\)
\(=\frac{935}{186}\times\frac{49}{2}\)
\(=\frac{45815}{372}\)
\(\)Bài 2:
\(a)18,355+x=23,61\)
\(x=23,61-18,355\)
\(x=5,255\)
\(b)225,35-x=169,5\)
\(x=225,35-169,5\)
\(x=55,85\)
\(c)x:2,5=5,63\)
\(x=5,63\times2,5\)
\(x=14,075\)
\(d)x:100=6,175\)
\(x=100\times6,175\)
\(x=6175\)
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a) 12,5 x 9,4 x 0,8 = ( 12,5 x 0.8 ) x 9,4
= 10 x 9,4
= 94
b) 7,29 x 5,3 + 7,29 x 4,7 = 7,29 x ( 5,3 + 4,7 )
= 7,29 x 10
= 72,9
c) 75,32 - 46,75 - 13,25 = 75,32 - ( 46,75 + 13,25 )
= 75,32 - 60
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a, = (12,5 x 0,8 ) x 9,4 = 10 x 9,4 = 94
b, = 7,19 x (5,3+4,7) = 7,19 x 10 = 71,9
c, = 75,32 - (46,75 + 13,25) = 75,32 - 60 = 15,32
d, = 6,75 x (101-1) = 6,75 x 100 = 675
k mk nha
a, ( 12,5 x 0,8 ) x 9,4
= 10 x 9 ,4
= 94
Phần b sai đề ak
c, 75,32 - 46 ,75 - 13,25
= 75,32 - ( 46 , 75 + 13 , 25 )
= 75 , 32 - 60
= 15 , 32
d , 6,75 x 101 - 6,75 x1
= 6,75 x ( 101 - 1 )
= 6,75 X 100
= 675
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+) 9,3 x 6,7 + 9,3 x 3,3
= 9,3 x (6,7 + 3,3)
= 9,3 x 10
= 93
+) 7,8 x 0,35 + 0,35 x 2,2
= (7,8 + 2,2 ) x 0,35
= 10 x 0,35
= 3,5
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a. X : 1,8 = 72
X = 72 x 1,8
X = 129,6
b. 9,3 x 6,7 + 9,3 x 3,3
= 9,3 x ( 6,7 + 3,3 )
= 9,3 x 10 = 93
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9,3 x 6,7 + 9,3 x 3,3
= 9,3 x (6,7 + 3,3)
= 9,3 x 10
= 93
+) 7,8 x 0,35 + 0,35 x 2,2
= (7,8 + 2,2 ) x 0,35
= 10 x 0,35
= 3,5
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50x24,5+49x24,5+24,5
=50x24,5+49x24,5+24,5x1
=(50+49+1)x24,5
=100x24,5
=2450
50 x 24,5 + 49 x 24,5 + 24,5
= 24,5 x ( 50 + 49 + 1)
= 24,5 x 100
= 2450
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A = (12,45 + 7,55)+6,98
=20+6,98=26,98
B = 9,3 x (6,7 + 3,3 )
=9,3 x 10=93
a)
=(12,45+7,55)+6,89
=20+6,89
=26,89
b)
=9,3.(6,7+3,3)
=9,3.10
=93