x : 2 = 64
x x 56 = 4254
x + 689 = 7523
x - 64 = 4657
ai nhanh nhat minh k
56 . Tính nhanh :
a ) 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3
b ) 36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
a) 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3
= 24 x 31 + 24 x 42 + 24 x 27
= 21 x ( 31 + 42 + 27)
= 21 x 100
= 2100
b) 36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
= 36 x ( 28 + 82) + 64 x ( 69 + 41)
= 36 x 110 + 64 x 110
= 110 x ( 36 + 64)
= 110 x 100
= 11000
a)2 x 31 x12 + 4 x 6 x 42 + 8 x 27 x 3
= 24 x 31 + 24 x 42 + 24 x 27
= 24 x (31 + 24 + 27)
=24 x 82
=1968
b)36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
=36 x (28 + 82) + 64 x ( 69 + 41 )
=36 x 110 + 64 x 110
=3960 + 7040
=11000
a) 2x31x12+4x6x42+8x27x3
=2x12x31+4x6x42+8x3x27
=24x31+24x42+24x27
=24x(31+42+27)
24x100=2400
b)36x28+36x82+64x69+64x41
=36x(28+82)+64x(69+41)
=36x110+64x110
x+56-64=57
k tớ k lại
\(x+56-64=57\)
\(x+56\) \(=57+64\)
\(x+56\) \(=121\)
\(x=121-56\)
\(x=65\)
x+56-64=57
x+56 = 57+64
x+56 = 121
x = 121-56
x = 65
k mk nha pạn cảm ơn trước
Tính nhanh:
24 x 45 x 56 phần 32 x 36x 64
Tính Nhanh:
a,64 x 7 +81 x 93 + 17 x 7
b,4 x 28 + 92 x 44 + 56 x 6 + 59 : 56
a, 64 x 7 + 81 x 93 + 17 x 7
= 7 x ( 64 + 17 ) + 81 x 93
= 7 x 81 + 81 x 93
= 81 x ( 93 + 7 )
= 81 x 100
= 8100
a) 64 x 7 + 81 x 93 + 17 x 7
= 7 x ( 64 + 17 ) + 81 x 93
= 7 x 81 + 81 x 93
= 81 x ( 7 + 93 )
= 81 x 100
= 8100
x la so tu nhien lon nhat co 5 chu so ma khi chia cho 56:64:88 deu du 31
tìm x
a) X : 8 = 64
b) X : 9 = 81
ai nhanh minh k
k mình mình k lại
a ) x : 8 = 64
x = 64 : 8
x = 8
b ) x : 9 = 81
x = 81 : 9
x = 9
tinh nhanh
A 196 x 56 + 196 x 41 + 4 x 196 - 196 = ?
B 132 x 19 + 132 x 18 + 64 x 132 - 132 = ?
C 145 x 69 + 145 x 32 - 145 = ?
ai tich cho minh minh tich cho
A : 196 x 56 + 196 x 41 + 4 x 196 - 196 x 1
= 196 x ( 56 + 41 + 4 - 1 )
= 196 x 100
= 19 600
B : 132 x 19 + 132 x 18 + 64 x 132 - 132 x 1
= 132 x ( 19 + 18 + 64 - 1 )
= 132 x 100
= 13 200
C : 145 x 69 + 145 x 32 - 145 x 1
= 145 x ( 69 + 32 - 1 )
= 145 x 100
= 14 500
A = 196 x 56 + 196 x 41 + 4 x 196 - 196
A = 196 x ( 56 + 41 + 4 - 1 )
A = 196 x 100 = 19600
B = 132 x 19 + 132 x 18 + 64 x 132 - 132
B = 132 x ( 19 + 18 + 64 - 1 )
B = 132 x 100 = 13200
C = 145 x 69 + 145 x 32 - 145
C = 145 x ( 69 + 32 - 1 )
C = 145 x 100 = 14500
a ) = 196 x 56 + 196 x 41 + 4 x 196 - 196 x 1
= 196 x ( 56 + 41 + 4 - 1 )
= 196 x 100
= 19600
b ) = 132 x 19 + 132 x 18 + 64 x 132 - 132 x 1
= 132 x ( 19 + 18 + 64 - 1 )
= 132 x 100
= 13200
c ) = 145 x 69 + 145 x 32 - 145 x 1
= 145 x ( 69 + 32 - 1 )
= 145 x 100
= 14500
a) 24/x , 36/x ,160/x va x lon nhat .
b) 64/x , 48/x , 88/x va x lon nhat
* / la chia het . Ai nhanh mik tik cho !
Cho phép tính sau: (25+7) : (56−25)× ( 8 : 3) :2+64 ×3%
Phép tính nào thực hiện được trong chương trình bảng tính?
A.
=(25+7)/(56-25)x(8/3)/2+6^4x3%
B.
=(25+7)/(56-2^5)x(8/3):2+6^4x3%
C.
=(25+7)/(56-25)*(8/3)/2+64* 3%
D.
=(25+7)/(56-2/5)x(8/3)/2+6^4x3%