\(6^2:43+2.5^2\)
\(=36:43+2.25\)
=\(\frac{36}{43}+50\)
\(=\frac{2186}{43}\)
62:43+2.52
=36:43+2.25
=36/43+50
=2186/43
\(6^2:43+2.5^2\)
\(=36:43+2\cdot25\)
\(=\frac{36}{43}+50\)
\(=50\frac{36}{43}\)
\(6^2:43+2.5^2\)
\(=36:43+2.25\)
=\(\frac{36}{43}+50\)
\(=\frac{2186}{43}\)
62:43+2.52
=36:43+2.25
=36/43+50
=2186/43
\(6^2:43+2.5^2\)
\(=36:43+2\cdot25\)
\(=\frac{36}{43}+50\)
\(=50\frac{36}{43}\)
Tính :
a) [(832 - 445 ) . 2 + 4542 : 6 ] . 2 + ( 2.5)2
b) |-15| + 2 ( 144 : |-12| - 2 . |-3|
\(A=\dfrac{6^{12}.3^2.5-7.9^7.2^{13}}{2.4^7.5-2^{14}.3^2}\)
A=3/2.5+3/5.8+3/8.11+...+3/92.98
B=2/2.5+2/5.8+2/8.11+...+2/92.98
3737 x 43 - 4343 x 37 / 2 + 4 + 6 + ... +100
1 . Thực hiện các phép tính sau bằng cách hợp lý nhất có thể :
a.125+70+375+230
b.62:4.3+2.52
c.150 : [25(18-42)]
11/9 + 7/6 . ( 2 - 1/3)
b, 20,17 . 43 + 57 .20,17
2^2x-3 - 2.5^2 = 5^2
Cho 3.5, 3^2.5, 3^2.5^2, ..., 3^n.5^k . hỏi có bao nhiêu ước số chung?
bài 1 : tinh gtri biểu thức
c, 78 + 22 x (96 : 3+ 20 )
d,( 779 : 41 x 16) x ( 435 - 249)
bài 2 : tính nhanh
a, 137 x 6 + 63 x 6 + 200 x 4
b. 42 x 43 + 43 x 57 + 43
c, 754 x 75 - 2262 x 25 + 4568