{ 47-[736 : (5-3)^4]}x2015
Tính:
22.31 - ( 12012 + 20120) :| -2|
{ 47 - [ 736 : (5-3)4 ]} .2013
\(a,=4\cdot3-\left(1+1\right):2=12-2:2=12-1=11\\ b,=\left[47-\left(736:2^4\right)\right]\cdot2013=\left(47-736:16\right)\cdot2013=\left(47-46\right)\cdot2013=2013\)
Bài 4 tính hợp lý
f) (-46) + (-64)+(-91) - (-220)
g) 22.31-(12012+20120):2
h) {47-[736:(5-3)4]}.2013
f: =-46-64-91+220
=220-110-91
=110-91=19
g: =4-2:2=3
h: ={47-736:2^4}*2013
=2013(47-184)
=-137*2013=-275781
{47 - [ 736 : (5 - 3)mũ 4]} x 2013
MN giúp em với,em cảm ơn!
{47 - [736 : (5 - 3)4]} x 2013
= {47 - [736 : 24]} x 2013
= {47 - [736 : 16]} x 2013
= {47 - 46} x 2013
= 1 x 2013
= 2013
a) 22 . 31 - ( 12012 + 20120 ) . |-2|
b) { 47 . [ 736 . ( 5-3)4]} . 203
a) 22 . 31 - ( 12012 + 20120 ) . |-2|
= 4 . 3 - ( 1 + 1 ) . 2
= 12 - 2 . 2
= 10 . 2
= 20.
b) { 47 . [ 736 . ( 5 - 3 )4]} . 203
= { 47 . [ 736 . 24 ]} . 203
= { 47 . [ 736 . 16 ]} . 203
= { 47 . 11 776 } . 203
= 553 472 . 203
= 112 354 816
a,
=4.3 - (1+1).2
=12-2.2
=12-4=8
b {47 . [736-2^4]}.203
={47. [736-16]} . 203
={47 . 720} . 203
=33840. 203
=6869520
Thực hiện phép tính
a) (-45)+81+(-64)-91-(-220)
b) 23.21-(12018-20180): |-2 |
c) {47-[736:(5-3)4]} .69
Bài 1: Thực hiện phép tính .
a)22 . 31-(12020+20120):|-2|]
b){47-[736:(5-3)4]}. 2013
a) Phép tính =
\(2^2.3-\left(1+1\right):2\)
\(=4.3-2:2\)
\(=12-1=11\)
b) Phép tính =
\(\left\{47-\left[736:\left(5-3\right)^4\right]\right\}.2013\)
\(=\left\{47-\left[736:16\right]\right\}.2013\)
\(=\left(47-46\right).2013\)
\(=1.2013=2013\)
Tinh bằng cách thuận tiên nhất 47×263+736×47+47
\(=47\times263+736\times47+47\times1\\ =47\times\left(263+736+1\right)\\ =47\times1000\\ =47000\)
Đúng ghi Đ, sai ghi S vào ô trống:
a) 736 : 32 = 23
b) 1701 : 27 = 64
c) 1648 : 47 = 35 (dư 3)
d) 1133 : 87 = 13 (dư 3)
Hướng dẫn giải:
a) 736 : 32 = 23
b) 1701 : 27 = 64
c) 1648 : 47 = 35 (dư 3)
d) 1133 : 87 = 13 (dư 3)
2/25=.../25 .../36=3/4
3/...=9/36
15/27=5/....
....28=5/7
36/72=..../2
2/25=.2../25 .27../36=3/4
3/.12..=9/36
15/27=5/..9..
..20..28=5/7
36/72=..1../2
\(\dfrac{2}{25}=\dfrac{2}{25}\)
\(\dfrac{27}{36}=\dfrac{3}{4}\)
\(\dfrac{3}{12}=\dfrac{9}{36}\)
\(\dfrac{15}{27}=\dfrac{5}{9}\)
\(\dfrac{20}{28}=\dfrac{5}{7}\)
\(\dfrac{36}{72}=\dfrac{1}{2}\)
TK
2/25=.2../25
27../36=3/4
3/.12..=9/36
15/27=5/..9..
..20..28=5/7
36/72=..1../2