Bài này đâu phải toán lớp 3 . Mình nghĩ bài này từ lớp 8 - 9 mới học cơ!

B1

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

B2

100-x=33

x=100-33

x= 67

Ko bít

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3.Tính giá trị của biểu thức:

78 - 56 x 4 = -146

4.Tìm x: 

x : 3 = 56 

x = 56 x 3 = 168

42 - x = 34 

x= 42 - 34 

x = 8 

8

giúp tớ nha 

tớ mới bị trừ 530 điểm

cảm ơn trước

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bị sao d

198 - x = 101 

          x = 198 - 101

          x = 97

198 - x=101

        x=198-101 

        x=97

X :3 + 625 = 654

X              = (654 - 625) : 3

X              = 27 : 3

X              = 9

x : 3 + 625 = 654

         x : 3 = 654 - 625

         x : 3 = 29

              x = 29 x 3

              x = 87

Vậy x = 87

haha thật là hay

\(1+100+1000000000000000000\)

\(=100000000000000101\)

\(\)\(\)hok tốt

ta có:

        lỗi sai là 10kgx10kg=\(100kg^2\)chứ ko phài =1 tạ (=100kg)

tương tự:

             \(\frac{1}{10}\)tạ \(\times\frac{1}{10}\)tạ=\(\frac{1}{100}\)\(tạ^2\)chứ không phải = \(\frac{1}{100}\)tạ

chiu

+) Nếu x-4 <0 thì GTTĐ của x-4 là -(x-4)

+) Nếu x-4 >0 thì GTTĐ của x-4 là x-4 

nhiều lắm bạn ạ