\(5\cdot2^2+7^{11}:7^9-1^8\)
\(=20+2^2-1\)
\(=20+4-1\)
\(=23\)
\(400:\left\{5\cdot\left[360-\left(290+2\cdot5^2\right)\right]\right\}\)
\(=400:\left\{5\cdot\left[360-\left(290+50\right)\right]\right\}\)
\(=400:\left(5\cdot\left[360-340\right]\right)\)
\(=400:\left(5\cdot20\right)\)
\(=400:100\)
\(=4\)
Thực hiện phép tính
1) 23+(-13) +(-50)
2)-5+15+(-123)
3)5871:{928-[(-82)+247)].5
4)40-(4.52-3.23)
5)4)62.5-72+149
6)-210:[16+3.(6+3.22)]+(-2022)
7)5.23+711:79-20230.18
8)400:{5.[360-(290+2.52)]}
9)75-(3.52) -4.53)
C=35+38+41+............92+95
c = 35 + 38 + 41 + ....... 92 + 95
Thực hiện phép tính:
C = 35 + 38 + 41 + ... + 92 + 95
5871:{928-[(-82)+247)]x5} = ?
C=35+38+41+.....+92+95 = ?
Tính
35 + 38 + 41 ....+ 92 + 95
S = 35 + 38 + 41+ .... + 92+ 95
tìm S
28 . 76 + 23 . 28 - 28 . 13
C = 35 + 38 + 41 + ........ + 92 + 95
Mong cac ban giup
Tính tổng sau :
a) S = 4 + 7 + 10 + 13 + ... + 2014 + 2017
b) S= 35 + 38 + 41 + ... + 92 + 95
c) S = 10 + 12 + 14 + ... + 96 + 98
