54-97
79-86
85-976
99-78990
967-8654
864567800-986533135
866900-87990007
76-970
86907-89
78-980
90-99
987-986
a)(-8978)-(2007-8978)+(-193)
b)187+[923-(923+887)]
c)39.178+30^2-78X39
d)3X4^2 :[500-(7X35+125)]
444+8978= ???
Số lớn nhất trong các số 99987; 99978; 99998; 99989
A. 99987
B. 99978
C. 99998
D. 99989
câu 2; thực hiện các phép tính sau:
a/ (-8978) - (2007 - 8978) + (-193)
b/ 187+[ 923 - ( 923+887) ]
c/ 39. 178 + 302-78.39
d/ 3. 42 : [ 500- (7.35 + 125 )]
\(a/(-8978)-\left(2007-8978\right)+\left(-193\right)\)
\(=\left(-8978\right)-\left(-6971\right)+\left(-193\right)\)
\(=\left(-8978\right)+6971+\left(-193\right)\)
\(=-2007+\left(-193\right)\)
\(=-2200\)
\(b/187+\left[923-\left(923+887\right)\right]\)
\(=187+\left[923-1810\right]\)
\(=187+\left(-887\right)\)
\(=-700\)
\(c/39.178+30^2-78.39\)
\(=39.\left(178-78\right)+900\)
\(=39.100+900\)
\(=3900+900\)
\(=4800\)
\(d/3.4^2:\left[500-\left(7.35+125\right)\right]\)
\(=3.16:\left[500-\left(245+125\right)\right]\)
\(=48:\left(500-370\right)\)
\(=48:130\)
\(=\frac{24}{35}\)
3254+99987-3568+65414=
nhớ kb với mình nha bạn nào hết lượt nói cho mình mình kb
ok!^v^
3254+99987-3568+65414=165087
mình kb rồi đó
1+6+9+8+5+965+9+98+8+595+986+8+8+98+986+9
\(\text{1+6+9+8+5+965+9+98+8+595+986+8+8+98+986+9}\)
\(=3799\)
học tốt nhé!!
@@
TL
= 3799
~HT~
4567890 - 986 = ?
TL:
\(4567890-986=4566904\)
Hk tốt :v
= 4566904 bn nhé
4567890 - 986
= 4566904
986 365 – 342 538
................................................................................
................................................................................
23,45 - 12, 986 = ?
23,45 - 12, 986 = 10,464