tính nhanh
22344 x 36 + 24668 x 82
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Tính hợp lý:
a) 73 x 49 + 73 x 51
b) 22344 x 36 + 44688 x 82
c) 3 x 18 x 12 + 4 x 82 x 9
d ) 36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
NHANH LÊN NHÉ CÁC BẠN MÌNH CHỜ ĐẤY
a) 73 x 49 + 73 x 51 b) 22344 x 36 + 44688 x 82 c) 3 x 18 x 12 + 4 x 82 x 9 d) 36 x 28 + 36 x 82 +64 x 69 + 64 x 41
= 73 x (49 + 51) =804384 + 3664416 = 648 + 2952 = 36 x (28 + 82) + 64 x (69 + 41)
=73 x 100 =4468800 = 3600 = 36 x 110 + 64 110
=7300 = 110 x (36 x 64)
= 110 x 100
= 11000
tính
22344 x 36 + 44688 x 82
22344x36+44688x82=804384+3664416=4468800
\(22344\)X \(36+44688\)X \(82\)\(=4468800\)
k cho mk nha
Tính nhanh:
36 x 28 + 36 x 82 + 64 x 69 + 64 x 41
=36x(28+82)+64x(69+41)
=36x110+64x110
=110x(36+64)
110x100
=11000
36x28+36x82+64x69+64x41
=36x(28+82)+64x(69+41)
=36x110+64x110
=110x(36+64)
=110x100
=11 000
= 36 x ( 28 + 82 ) + 64 x ( 69 + 41 )
= 36 x 110 + 64 x 110
= ( 36 + 64 ) x 110
= 100 x 110
11000
tính nhanh
22344 x 36 + 44688 x 82
nhớ tính nhanh nha
bài nãy dễ thôi
22344x36+22344x2x82
22344x36+22344x164
22344x(36+164)
22344x200
4468800
t nha
22344 x 36 + 44688 x 82
= 22344 x 36 + 22344 x 2 x 82
= 22344 x ( 36 + 82 x2)
= 22344 x 200
= 4468800
22344 x 36 + 44688 x 82
= 22344 x 2 x 18 + 44688 x 82
= 44688 x 18 + 44688 x 82
= 44688 x ( 18 + 82 )
= 44688 x 100
= 4468800
tính bằng cách thuận tiện nhất: 22344 x 36 +44688 x 82
22344 x 36 + 44688 x 82
= 22344 x 36 + 22344 x 2 x 82
= 22344 x 36 + 22344 x 164
= 22344 x ( 36 + 164 )
= 22344 x 200
= 4468800
tính
[ 36 x 4 x ( 82 - 7x11 )^2 ] : 4 - 2016^0
\(\left[36x4x\left(82-7x11\right)^2\right]:4-2016^0\)
\(=\left[144x\left(82-77\right)^2\right]:4-1\)
\(=\left(144x5^2\right):4-1\)
\(=\left(144x25\right):4-1\)
\(=3600:4-1\)
\(=900-1\)
\(=899\)
[ 36.4.( 82 - 7.11 )2 ] : 4 - 20160
= [ 36.4.52 ] : 4 - 20160
= [ 36.4.25 ] : 4 - 20160
= 3600 : 4 -1
= 900 - 1
= 899
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
tính nhanh
A, 2x31 x12 +4x6 x42 +8 x 27 x3
b, 36 X 28 +36 x 82 +64 x 69 + 64 x41
a, 2 x 31 x 12 + 4 x 6 x 42 + 8 x 27 x 3
=( 2 x 12 ) x 31 + ( 4 x 6 ) x 42 + ( 8 x 3 ) x 27=24 x 31 + 24 x 42 + 24 x 27=24 x ( 31 + 42 + 27 )=24 x 100=2400b,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=( 36 + 64 ) x 110=100 x 110=1100056 . 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