Toán Lớp 4: Tìm x: a/ x + 456788 = 9867655 b/ x – 23345 = 9886 c/ 283476 + x = 986352 d/ y × 123 = 44772 e/ X : 637 = 2345 g/ 212 552 : x = 326 h/

Question

Toán Lớp 4:  Tìm x: a/ x + 456788 = 9867655 b/ x – 23345 = 9886 c/ 283476 + x = 986352 d/ y × 123 = 44772 e/ X : 637 = 2345 g/ 212 552 : x = 326 h/ 40000 – x =3876 i/ (x + 1233) – 1978 = 9876 k/ x : 2 : 3 = 138

trucoanh55 · Answer

a) x + 456788 = 9867655        x                  = 9867655 - 456788        x                  = 9410867     b) x &ndash; 23345 = 9886         x               = 9886 + 23345         x               = 33231     c) 283476 + x = 986352                         x = 986352 - 283476                         x = 702876     d) y &times; 123 = 44772         y            = 44772 : 123         y            = 364     e) X : 637 = 2345         x          = 2345 x 637         x          = 1493765     g) 212 552 : x = 326                         x = 212552 : 326                         x = 652     h) 40000 &ndash; x =3876                       x = 40000 - 3876                       x = 36124     i) (x + 1233) &ndash; 1978 = 9876        (x + 1233)             = 9876 + 1978        (x +1233)              = 11854         x                           = 11854 - 1233         x                           = 10621     k) x : 2 : 3 = 138          x : 2      = 138 x 3         x : 2      = 414         x           = 414 x 2         x           = 828

diemmyhoa · Answer

a) x + 456788 = 9867655   x = 9867655 - 456788   x = 9410867   b) x - 23345 = 9886   x = 23345 + 9886   x = 33321   c) 283476 + x = 986352   x = 986352 - 283476   x = 702876   d) y  times 123 = 44772   y = 44772 : 123   y = 364   e) x : 637 = 2345   x = 637  times 2345   x = 1493765   g) 212552 : x = 326   x = 212552 : 326   x = 652   h) 40000 - x = 3876   x = 40000 - 3876   x = 36124   i) ( x + 1233 ) - 1978 = 9876   x + 1233 = 9876 + 1978   x + 1233 = 11854   x = 11845 - 1233   x = 10621   k) x : 2 : 3 = 138   x : 6 = 138   x = 138  times 6   x = 828