tính bang cach thuan tien nhat
198 x 27 + 198 x 72 + 198
tinh bang cach thuan tien nhat:54×72+54×27+54
54x72+54x27+54
=54x72+54x27+54x1
=54x(72+27+1)
=54x100
=5400
Hok tốt!
54 * 72 + 54 * 27 + 54
= 54 * 72 + 54 * 27 + 54 * 1
= 54 * ( 72 + 27 + 1 )
= 54 * 100
= 5400.
54 × 72 + 54 x 27 + 54
= 54 x 72 + 54 x 27 + 54 x 1
= 54 x ( 72 + 27 + 1 )
= 54 x 100
= 5400
tinh bang cach thuan tien nhat
[72 x 135 + 9 x 28 x 15 ] : 25-3500 : 25
(72 x 135 + 9 x 28 x 15) : 25 - 3500 : 25
= [72 x 135 + 28 (9 x 15)] : 25 - 3500 : 25
= (72 x 135 + 28 x 135) : 25 - 3500 : 25
= [135 x (72 + 28)] : 25 - 3500 : 25
= [135 x 100] : 25 - 3500 : 25
= 13500 : 25 - 3500 : 25
= (13500 - 3500) : 25
= 10000 : 25
= 400
tham khảo
(72 x 135 + 9 x 28 x 15) : 25 - 3500 : 25
= [72 x 135 + 28 (9 x 15)] : 25 - 3500 : 25
= (72 x 135 + 28 x 135) : 25 - 3500 : 25
= [135 x (72 + 28)] : 25 - 3500 : 25
= (135 x 100) : 25 - 3500 : 25
= 13500 : 25 - 3500 : 25
= (13500 - 3500) : 25
= 10000 : 25
= 400
( 72 x 135 + 9 x 28 x 15 ) : 25-3500 : 25
= [ 72 x 135 + ( 9 x 15 ) x 28 ] : 25 - 3500 : 25
= ( 72 x 135 + 135 x 28 ) : 25 - 3500 : 25
= [ 135 x ( 72 + 28 ) ] : 25 - 3500 : 25
= ( 135 x 100 ) : 25 - 3500 : 25
= 13500 : 25 - 3500 : 25
= ( 13500 - 3500 ) : 25
= 10000 : 25
= 400
tinh bang cach thuan tien nhat:(198,08 x 23,56 + 165,9 : 27) x (25,07 x 3 - 75,21) + 8,8
\(\left(198,08\times23,56+165,9:27\right)\times\left(25,07\times3-75,21\right)+8,8\\ =\left(198,08\times23,56+165,9:27\right)\times\left(75,21-75,21\right)+8,8\\ =\left(198,08\times23,56+165,9:27\right)\times0+8,8\\ =0+8,8\\ =8,8\)
(198,08×23,56+ 165,9:27) × (25,07×3−75,21)+ 8,8
= (198,08 × 23,56 + 165,9 : 27) × (75,21 − 75,21) + 8,8
= (198,08× 23,56 +165,9:27) × 0 + 8,8
= 0+8,8
= 8,8
(198,08×23,56 + 165,9 : 27)×(25,07×3 − 75,21) + 8,8
= (198,08×23,56 + 165,9 : 27)×(75,21 − 75,21) + 8,8
= (198,08×23,56 + 165,9 : 27)×0 + 8,8
= 0 + 8,8
= 8,8
tinh bang cach thuan tien nhat:
(198,08 x 23,56 + 165,9 : 27) x (25,07 x 3 - 75,21) + 8,8
=(198,08*23,56+165,9:27)*0+8,8
=0+8,8
=8,8
Tinh bang cach thuan tien :
41 / 27 x 13 / 18 - 13 / 18 x 14 / 27
41 / 27 x 13 / 18 - 13 / 18 x 14 / 27 = ( 41 / 27 - 14 / 27 ) x 13 / 18 = 27 / 27 x 13 / 18 = 1 x 13 / 18 = 13 / 18
198 x 27 + 198 x 72 + 198=
tính bằng cách thuận tiện nhất
198 x 27 + 198 x 72 + 198
= 198 x 27 + 198 x 72 + 198 x 1
= 198 x ( 27 + 72 + 1 )
= 198 x 100
= 19800
198 x 27 + 198 x 72 + 198 x 1
= 198 x ( 27 + 72 + 1)
= 198 x 100
= 19800
tinh bang cach thuan tien nhat; 476*72+476*28
476x72+476x28
=476x(72+28)
=476x100
=47 600
Tính bằng cách thuận tiện nhất:
198 x 27 + 198 x 72 + 198
198 x 27 + 198 x 72 + 198
= 198 x (27 + 72 + 1)
= 198 x 100
= 19 800
#Phương
198 x 27 + 198 x 72 + 198
= 198 x 27 + 198 x 72 + 198 x 1
= 198 x ( 27 + 72 + 1 )
= 198 x 100
= 19800
Chúc bạn học tốt !!!
198 x 27 + 198 x 72 + 198
= 198 x 27 + 198 x 72 + 198 x 1
= 198 x ( 27 + 72 + 1)
= 198 x 100
= 19800
tinh bang cach thuan tien 72 x2 72x3 72 x5