434-6=..........
Đặt tính rồi tính:
2 434 x 2
3 322 x 3
12 331 x 3
11 101 x 6
\(2434\times2=4868\)
\(3322\times3=9966\)
\(12331\times3=36993\)
\(11101\times6=66606\)
\(A=\left(\dfrac{5.5^3}{125^2.49}\right)^{15}:\left(\dfrac{5^6}{434}\right)^7\)
\(A=\left(\dfrac{5.5^3}{125^2.49}\right)^{15}:\left(\dfrac{5^6}{434}\right)^7\)
\(=\left(\dfrac{5^4}{5^6.7^2}\right)^{15}.\dfrac{434^7}{5^{42}}\)
\(=\left(\dfrac{1}{5^2.7^2}\right)^{15}.\dfrac{434^7}{5^{42}}\)
\(=\dfrac{62^7.7^7}{5^{30}.7^{30}.5^{42}}\)
\(=\dfrac{62^7}{5^{72}.7^{23}}\)
Tuấn Anh Phan Nguyễn ( tui k giỏi = ông , lm ik )
Đoàn Đức Hiếu ( pé lm hộ cj nha , cj đag hc lại lp 4 )
tính nhanh
475+666+334-1000
1245-238+755-572+45
(434+191)-(191-434)
472-186-172+986
475+(666+334)-100-=475+1000-1000=475
1245-238+755-572+45=(1245+755+45)-(238+572)=2045-810=1235
(434+191(-(191-434)=434+191-191+434=868
472-186-172+986=(472-172)+(986-186)=300+800=1100
475 + 666 + 334 - 1000
= 475 + ( 666 + 334 ) -1000
= 475 + 1000 + 1000
= 1475 - 1000
= 475
1245 - 238 + 755 - 572 + 45
= 1245 - ( 238 + 572 ) + ( 755 + 45 )
= 1245 - 810 - 800
= 1245 - 10
= 1235
( 434 + 191 ) - ( 191 - 434 )
= ( 434 - 434 ) - ( 191- 191 )
= 0 - 0
= 0
472 - 186 - 172 + 986
= ( 472 - 172 ) + ( 986 - 186 )
= 300 + 800
= 1100
tính nhanh bài 217-434+383-34
\(=\left(217+383\right)-\left(434+34\right)=600-468=132\)
12345789+999876543211+434-9755636*9
Tính
a) 4 3 4 + - 0 , 37 + 1 8 + - 1 , 28 + - 2 , 5 + 3 1 12
tính giá trị biểu thức 434:7+51x25
1548+434=?
14571+343=?
1 + 2 = 21
2 + 3 = 32
3 + 4 = 43
4 + 5 = ?