B1

a) 17 b) 6 c) 112 d)9687

B2

100-x=33

x=100-33

x= 67

Ko bít

22222222222222222

\(890-90+100+100=1000\)

k mk 3 cai mk k lai cho

890-90+100+100=800+100+100

                        =900+100

                        =1000

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bị sao d

0

10

nha bn k mk nha bn

thanks nhju

\(99+1-100=0\)

\(66+44-100=10\)

k mk mk k lại nhé

200 nha bạn!

Chúc bạn học tốt!

\(100+100=200\)

#hok tốt#

Cạnh hình vuông mới là

152 : 4 = 38(cm)

Chiều dài ban đầu là

38 - 3 = 35(cm)

Chiều rộng ban đầu là

38 - 8 = 30(cm)

Diện tích hình chữ nhật ban đầu là

35 x 30 = 1050(cm\(^2\))

HT

1050² nha

X . 10 = 100                                  ; X + 10 x 10 = 100

       X = 100 : 10                             X + 10 = 100 : 10

       X = 10                                      X + 10 = 10

                                                               X = 10 - 10

                                                               X = 0

x . 10 = 100

x         = 100 : 10

x         = 10

x + 10 × 10 = 100

x + 100        = 100 

x                   = 100 - 100

x                   = 0

a x 100 + b x 10 + c = abc

a x 100 + bc = abc

trả lời chi tiết 

mk cho k!!!!!

Trả lời

=1 Vì rút gọn

Học tốt !

ko rút gọn :(