215.94/ 66. 83
215x 94 phần 66 x 83
\(\dfrac{2^{15}\cdot9^4}{6^6\cdot8^3}=\dfrac{2^{15}\cdot3^8}{2^6\cdot3^6\cdot2^9}=3^2=9\)
[83+519]x=66*100+22
(83 + 519) . x = 66 . 100 + 22
(83 + 519) . x = 6600 + 22
(83 + 519) . x = 6622
602 . x = 6622
x = 6622 : 602
x = 11
tính nhanh :
48 . (-64) + 24. 66 - 48.( 83 - 64)
48 . (-64) + 24. 66 - 48.( 83 - 64)
= 48 . ( - 64 ) + 24 . 66 - 48 . 83 - 48 . 64
= 48 . ( - 64 - 83 - 64 ) +24 . 66
= 48 . ( - 211 ) + 24 . 66
= - 10128 + 1584
= - 8544
48.(-64)+24.66-48.(83-64)
=48.(-64)-48.19+24.66
=48.[(-64)-19]+24.66
=48.(-83)+24.66
=24.2.(-83)+24.66
=24.[(-166)+66]=24.(-100)=-2400
Chúc bạn học tốt ^^!!!
83+3+5+58+5+8+7+3+888+111+555+66+999+6649+5558
\(\left(\frac{22}{43}+\frac{1234}{5678}-\frac{17}{83}\right)-\left(\frac{66}{83}-\frac{21}{43}\right)\)giúp mik vs thak nhìu
Đặt tính rồi tính:
a) 14 x 6 20 x 5 34 x 7 66 x 6
......... ........... .......... ...........
......... ........... .......... ...........
......... ........... .......... ...........
b) 86 : 2 63 : 3 80 : 4 83 : 4
......... ........... .......... ...........
......... ........... .......... ...........
......... ........... .......... ...........
a ) A = ( 5,05 : \(\dfrac{1}{40}\) - 2,8 \(\times\) \(\dfrac{5}{6}\) )
b ) B = -66 .(\(\dfrac{1}{2}\) - \(\dfrac{1}{3}\) + \(\dfrac{1}{11}\) ) + 124 . (-17) + 83 . (-124)
a) a = \(\dfrac{599}{3}\)
b) B = -12417
TÍNH NHANH
A, [53+(-76)]-[-76-(-53)]
B,[(-59)+71]-[-83-(-95)]
C, 3758+57-3759-66
1/ (-86) + (-14)
2/ 123 + (-36)
3/(-44) - (-66)
4/ -82 + (-28)
5/ 83 + (-17)
6/ (-83) - 33
7/ 73 +(-24)
8/ 84 + (-48)
9/ (-72) - (+82)
10/ (-97) - (+82)
11/ 19+ ( -92 )
12/ 38 - (+28)
13/ (+13) + (-27)
14/ (-85) + 29
15/ (-84 ) - (-27)
16/ -23 + 78
17/ 93 + (-29)
18/ ( -74) - 83
19/ (-183) + 83
20/ 849 - (-3832)
1. -86 + ( -14)
= -86 - 14
= -100
2. 123 + ( -36)
= 123 - 36
= 87
3. ( -44) - ( -66)
= -44 + 66
= 22
4. -82 + (-28)
= -82 - 28
= -110
5. 83 + ( -17)
= 83 - 17
= 66
Các bài khác làm tương tự nha bạn
1/ (-86)+(-14)=-86-14=-100
2/123+(-36)=123-36=87
3/(-44)-(-66)=-44+66=22
4/-82+(-28)=-82-28=-110
5/83+(-17)=83-17=66
6/(-83)-33=(-83)+(-33)=-116
7/ 73+(-24)=73-24=49
8/84+(-48)=84-48=36
9/-72-82=-72+(-82)=-154
10/-97-82=-97+(-82)=-179
11/19+(-92)=19-92=-73
12/38-28=10
13/13+(-27)=13-27=-14
14/-85+29=-85-(-29)=-114
15/-84-(-27)=-84+27=-57
16/-23+78=-23-(-78)=-101
17/93+(-29)=93-29=64
18/-74-83=-74+(-83)=-157
19/-183+83=-183-(-83)=-266
20/849-(-3832)=849+3832=4681
Có gì sai mong bạn sửa giúp mình nhé!
ối dồi ôi nhiều thế
mk chịu
1/ (-86) + (-14)
2/ 123 + (-36)
3/(-44) - (-66)
4/ -82 + (-28)
5/ 83 + (-17)
6/ (-83) - 33
7/ 73 +(-24)
8/ 84 + (-48)
9/ (-72) - (+82)
10/ (-97) - (+82)
11/ 19+ ( -92 )
12/ 38 - (+28)
13/ (+13) + (-27)
14/ (-85) + 29
15/ (-84 ) - (-27)
16/ -23 + 78
17/ 93 + (-29)
18/ ( -74) - 83
19/ (-183) + 83
20/ 849 - (-3832)