42*36+64*42
Tính bằng cách thuận tiện nhất :
a)5*25*216*4
b)4*37*25*16
c)36*28+36*82+64*69+64*41
d)42*53+42*36+42*11
e)37*45+56*37-37
h)17+17*81+18*17
ai nhanh nhất đc 3 tick nha
a ) 5 x 216 x 25 x 4 = 1080 x 100 = 108000
b ) 37 x 16 x 25 x 4 = 592 x 100 = 59200
c ) 36 x ( 28 + 82 ) + 64 x ( 69 + 41 ) = 36 x 110 + 64 x 110 = ( 36 + 64 ) x 110 = 100 x 110 = 11000
d ) 42 x ( 53 + 36 + 11 ) = 42 x 100 = 4200
e) 37 x 45 + 56 x 37 - 37 x 1 = 37 x ( 45 + 56 - 1 ) = 37 x 100 = 3700
h) 17 x 1 + 17 x 81 + 18 x 17 = 17 x ( 1 + 81 + 18 ) = 17 x 100 = 1700
Mik nhanh nhất đấy , nhớ click cho mik nha !!!!!!!!!!!!!!!!!!!
a) 5 x 25 x 216 x 4
= ( 5 x 216 ) x ( 25 x 4 )
= 1080 x 100
= 108000
b) 4 x 37 x 25 x 16
= ( 4 x 25 ) x ( 37 x 16 )
= 100 x 592
= 59200
a)=(25x4)x5x216=100x5x216=500x216=108000
b)=(4x25)x37x16=100x37x16=3700x16=59200
c)=[36x(28+82)]+[64x(69+41)]=[36x110]+[64x110]=110x(36+64)=110x100=11000
d)=42x(53+36+11)=42x100=4200
e)=37x(45+56-1)=37x100=3700
h)=17x(1+81+18)=17x100=1700
k mk nhá
80-m+42=36+64
80 - m +42=100
80 - m = 100 -42
80 - m = 58
m= 80 - 58
m = 22
80-m+42=100
80-m = 100-42
80-m = 58
m = 80-58
m = 22
tính nhanh : 20+36+42+52+56+64+67
20+36+42+52+56+64+67
=( 36+64)+(52 + 42 + 56 ) + 20+67
=100 + 150 + 20 + 67
= 250 + 20 + 67
= 270 + 67
= 337
=(36+64)+(42+67)+(52+56)+20
=100 + 109 + 108 + 20
= 337
a) 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
b) 36 . 28 + 36 . 82 + 64 . 69 . 64 . 41
b) 36.28+36.82+64.69+64.41
= 36.(28+82)+64.(69+41)
=36.110+64.110
=(36+64).110
=100.110
=11000.( phần a mk nghĩ sau )
b) = 36 . (28+82) + 64 . (69+41)
= 36 . 110 + 64 . 110
= (36+64) . 110
= 100 . 110
= 11000
a, 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
= 2 . 31 . 3 . 4 + 4 . 2 .3 . 42 + 2 . 4 . 27 . 3
= 2 . 3 . 4 ( 31 + 42 + 27 )
= 2 . 3 . 4 . 110
= 2640
Tính nhanh
a) 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
b) 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
mik đầu tiên nhé bạn !
a) 2.31.12+4.6.42+8.27.3
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b) 36.28+36.82+64.69+64.41
=36.(28+82)+64.(69+41)
=36.110+64.110
=110.(36+64)
=110.100
=11000
Tính nhanh:
a) 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
b) 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
a) 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
= 24 . 31 + 24 . 42 + 24 . 27
= 24 . (31 + 42 + 27)
= 24 . 100
= 2400
b) 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
= 36 . (28 + 82) + 64 . (69 + 41)
= 36 . 110 + 64 . 110
= (36 + 64) . 110
= 100 . 110
= 11000
Tính nhanh:
a. 2 . 31 .12 + 4 . 6 . 42 + 8 . 27 . 3
b. 36 . 28 + 36 . 83 + 64 .69 + 64 . 41
a.2.31.12+4.6.42+8.27.3
=2.12.31+4.6.42+8.3.27
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b.36.28+36.83+64.69+64.41
=36.(28+83)+64.(69+41)
=36.111+64.111
=(36+64).111
=100.111
=11100
Tính nhanh: a) 36 + 53 + 47 + 64 b) 242 - 42 + 167 - 67
200
242 - 42 + 167 - 67 =
|
a) 36 + 53 + 47 + 64 = (36+64)+(53+47)= 100+100=200
b) =(242-42)+(167-67)= 200+100=300
A)
= ( 36 + 64 ) + ( 53 + 47 )
= 100 + 100
= 200
B)
= ( 242 - 42 ) + ( 167 - 67 )
= 200 + 100
= 300
Tính nhanh
a , 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
b, 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
a) 2.31.12+4.6.42+8.27.3
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b) 36.28+36.82+64.69+64.41
=36.(28+82)+64.(69+41)
=36.110+64.110
=110.(36+64)
=110.100
=11000
a = 24 . 31 + 24 . 42 + 24 . 27
= 24 . 100
= 2400
b = 36 . ( 28 + 82 ) + 64 . ( 69 + 41 )
= 36 . 110 + 64 . 110
= 110 . ( 36 + 64 )
= 100 . 100 = 11000
a = 24 . 31 + 24 . 42 + 24 . 27
= 24 . 100
= 2400
b = 36 . ( 28 + 82 ) + 64 . ( 69 + 41 )
= 36 . 110 + 64 . 110
= 110 . ( 36 + 64 )
= 110 . 100 = 11000