11x11=121

22x22=484

33x33=1089

44x44=1936

55x55=3025

66x66=4356

k mk nhé,1000000%  đúng

11 x 11 = 121

22 x 22 = 484

33 x 33 = 1089

44 x 44 = 1936

55 x 55 = 3025

66 x 66 = 3356

11 x 11 = 121

22 x 22 = 484

33 x 33 = 1089

44 x 44 = 1936

55 x 55 = 3025

66 x 66 = 4356

hoac sai vi tui moi lop 3

honh phai

11nhan11

22nhan22

33nhan33

co hong phai nhu the

* la dau nhan

: la dau cach giua cac phep thinh

(45+75)*66+(75+45)*34

=(45+75)*(66+34)

=120*100

=12000

11+22+33+44+55+66+77+88+99:11

=11+22+33+44+55+66+77+88+9

=(11+9)+(22+88)+(33+77)+(44+66)+55

=20+110*3+55

=20+330+55

=405

Ta có :

a, (45 + 75) x 66 + (75 + 45) x 34

=  (45 + 75) x (66 + 34)

=   120  x 100

=  12000

11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 99 : 11

= 33 + 77 + 121 + 165 + 9

= 405

\(11+22+33+44+55+66+77+88+99:11\)

\(\left(11+99\right)+\left(22+88\right)+\left(33+77\right)+\left(44+66\right)+55:11\)

\(110+110+110+110+55:11\)

\(440+55:11\)

\(445\)

11 + 11 = 22

22 + 22 = 44

33 + 33 = 66

44 + 44 = 88

55 + 55 = 110

Học tốt~

11+11=22

22+22=44

33+33=66

44+44=88

55+55=110

tk mk ha 

11+11=22

22+22=44

33+33=66

44+44=88

55+55=110

tính bằng cách thuận tiện á

mà thôi ko làm đâu

kb nhé

hok tốt

22+33+55+44+11

=55+55+44+11

=110+44+11

=165

~B2k4~

(11+55)+(22+44)+33=66+66+33

                                 =66+99

                                 =165

396,99

tick nhé 

mình nhanh nhất

ai tick mik mik tick lại cho

=(11+99) +(22+88)+(33+88) +(44+66)+55 :100

=110+110+110+110 +55:100

=440+55:100

=495 :100

=4,95

TICK NHA

22 x 22 = 16

11 x 11 = 4

33x33=36

44x44=64

22x22=16

11x11=4

22 x 22 = 16

11 x11 =4

bằng 64

= 1936

chúc bn học giỏi

44 X 44 = 256

= 1 + 11 + 11 + 11 + 11 = 1 + 4 . 11 = 1 + 44 = 45 

\(100-99+88-77+66-55+44-33+22-11\\ =\left(100-99\right)+\left(88-77\right)+\left(66-55\right)+\left(44-33\right)+\left(22-11\right)\\ =1+11+11+11+11\\ =1+11\times4\\ =1+44\\ =45\)

\(100-99+88-77+66-55+44-33+22-11\)

\(=1+11+11+11+11\)

=45