Bài tập 3 trang 5 VBT Toán 4 tập 1

 \(\eqalign{a) & x + 527 = 1892 \cr & x\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 1892 - 527 \cr & x\,\,\,\,\,\,\,\,\,\,\,\,\,\, \,= 1365 \cr} \)

\(\eqalign{b) & x - 631 = 361 \cr & x\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 361 + 631 \cr & x\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 992 \cr} \)

\(\eqalign{c) & x \times 5 = 1085 \cr & x\,\,\,\,\,\,\,\, = 1085:5 \cr & x\,\,\,\,\,\,\,\, = 217 \cr}\)

\(\eqalign{d) & x:5 = 187 \cr & x\,\,\,\,\,\,\, = 187 \times 5 \cr & x\,\,\,\,\,\,\, = 935 \cr}\)

-- Mod Toán lớp 4 HỌC247