Tính nhanh:
C=23^22.(32^23-22^32)/22^32.(32^23-23^22)-32^23.(22^32-23^22)
tính nhanh [22^32.(32^23-23^22)-32^28.(22^32-23^22)]:23^22.(32^23-22^32)
Nguyễn Quang Thành trả lời cụ thể đi
[ 22^32(32^23-23^22) - 32^23(22^32-23^22) ] : 23^22(32^23-22^32)
Tính :
45 x 32 + 45 x 23
45 : 32 + 45 : 23
43 x 33 + 43 x 22 + 43
45 x 32 + 45 x 23
= 45 x ( 32 + 23 )
= 45 x 55
= 2475
45 : 32 + 45 : 23
= 1,40625 + 1,9566521739
= 3,362771739
43 x 33 + 43 x 22 + 43
= 43 x ( 33 + 22 + 1 )
= 43 x 56
= 2408
45 x 32 + 45 x 23
= 45 x ( 32 + 23 )
= 45 x 55
= 2475
45 : 32 + 45 : 23
= 1,40625 + 1,9566521739
= 3,362771739
43 x 33 + 43 x 22 + 43
= 43 x ( 33 + 22 + 1 )
= 43 x 56
= 2408
45 x 32 + 45 x 23
= 45 x ( 32 + 23 )
= 45 x 55
= 2475
45 : 32 + 45 : 23
= 1,40625 + 1,9566521739
= 3,362771739
43 x 33 + 43 x 22 + 43
= 43 x ( 33 + 22 + 1 )
= 43
k mk nha mai đổi tk bn tk mk câu này
Thực hiện phép tính (tính nhanh nếu có thể)
a)3 . 52 + 15 . 22 - 26 : 2
b)53. 2 - 100 : 4 + 23. 5
c)62 : 9 + 50 . 2 - 33 . 33
d)32 . 5 + 23 . 10 - 81 : 3
e)513 : 510 - 25 . 22
f)20 : 22 + 59 : 58
a) \(3.5^2+15.2^2-26\div2\)
= 3.25 + 15.4 - 13
= 75 + 60 - 13
= 135 - 13
= 122
b) \(5^3.2-100\div4+2^3.5\)
= 125.2 - 25 + 8.5
= 250 - 25 + 40
= 225 + 40
= 265
c)\(6^2\div9+50.2-3^3.33\)
= 36 : 9 + 100 - 9.33
= 4 + 100 - 297
= 104 - 297
= -193
d)\(3^2.5+2^3.10-81\div3\)
= 9.5 + 8.10 - 27
= 45 + 80 - 27
= 125 - 27
= 98
e) \(5^{13}\div5^{10}-25.2^2\)
= 53 - 25.4
= 125 - 100
= 25
f) \(20\div2^2+5^9\div5^8\)
= 20 : 4 + 5
= 5 + 5
= 10
tính nhanh :
a) 21+22+23+....28
b) 31+32+33+....39
tính nhanh:
a) 21+22+23+...+28
b) 31+32+33+...+39
a) 21+22+23+24+25+26+27+28
= (28+22) + (27+23) + (26+24) + (25+21)
= 50 + 50 + 50 + 46
= 196
b) 31+32+33+34+35+36+37+38+39
= (31+39) + (32+38) + (33+37) + (34+36) +35
= 70+70+70+70+35
= 315
Tinh nhanh : 35 ( 14 - 23 ) - 23 ( 14 - 35 )
32 . ( - 39 ) + 16 . ( -22 )
Tinh nhanh : 35 ( 14 - 23 ) - 23 ( 14 - 35 )
32 . ( - 39 ) + 16 . ( -22 )
35 (14 - 23) - 23(14-35)
32x(-39)+16.(-22)
=16x(-78)+16.(-22)
=16x(-78+-22)
=16x-100
=-1600
=35x14 - 35x23 - 23x14-23x35
=(35x14 - 23 x 14)-(35x23 - 23x35)
=14x(35-23)-0
=14x12
=168
chơi bang bang thì k nha
35 (14 - 23) - 23(14-35)
=35.14 - 35.23 - 23.14-23.35
=(35.14 - 23 . 14)-(35.23 - 23.35)
=14.(35-23)-0
=14.12
=168
32.(-39)+16.(-22)
=16.(-78)+16.(-22)
=16.(-78+-22)
=16.-100
=-1600
Tinh nhanh : 35 ( 14 - 23 ) - 23 ( 14 - 35 )
32 . ( - 39 ) + 16 . ( -22 )
35 (14 - 23) - 23(14-35)
32x(-39)+16.(-22)
=16x(-78)+16.(-22)
=16x(-78+-22)
=16x-100
=-1600
=35x14 - 35x23 - 23x14-23x35
=(35x14 - 23 x 14)-(35x23 - 23x35)
=14x(35-23)-0
=14x12
=168
chơi bang bang thì k nha
Tính
a) 22+36= 96−32= 62−30=
89–47= 44+44= 45−5=
b) 32+3−2= 56−20−4= 23+14−15=
a) 22+36=58 96−32=64 62−30=32
89−47=42 44+44=88 45−5=40
m, (-2)3.(-5)2
n, -32.(22-32x)
k, -40. (3-23)2
giúp mik đi~ahh~~huhuhu, giúp mik 2 bài ạ