a ) 0,783 : 87 = 0,009

86,76 : 12 = 7,23

266,22 : 34 = 7,83

483 : 35 = 13,8

b ) 127 : 25,4 = 5

26,52 : 3,9 = 6,8

19,04 : 5,6 = 3,4

270: 10,8 = 25

0.009;7.23;7.83;0.5;6.8;0.34;25

a > 0,783 : 87 = 0,009

86,76 : 12 = 7,23

266,22 : 34 = 7,83

483 : 35 = 13,8

b > 127 : 25,4 = 5

26,52 : 3,9 = 6,8

19,04 : 5,6 = 3,4

270 : 10,8 = 25

A]0,783:87=0,009

266,22:34=7,83

483:35=19,32

B]127:25,4=5

19,04:5,6=3,4

270:10,8=25

câu a:

0,009;7,83;19,32;

câu b:

5;3,4;25

25

25

25

\(\begin{array}{*{20}{c}}{a)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{28}\\{35}\end{array}}\\\hline{\,\,\,\,63}\end{array}\)                      \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{63}\\{28}\end{array}}\\\hline{\,\,\,\,35}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{63}\\{35}\end{array}}\\\hline{\,\,\,28}\end{array}\)

\(\begin{array}{*{20}{c}}{b)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{42}\\{49}\end{array}}\\\hline{\,\,\,\,91}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{91}\\{42}\end{array}}\\\hline{\,\,\,49}\end{array}\)                       \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{91}\\{49}\end{array}}\\\hline{\,\,\,\,42}\end{array}\)

8,75

8.75

=8,75

a: =19

b: =18(dư 2)

a) 75460

b) 236640

c) 54,92

d) 450

Vì ko đặt tính đc nên ra kết quả luôn

a) 75460

b) 236640

c) 54,92

d) 450,23

Vì ko đặt tính đc nên ra kết quả luôn

Đáp án: 1620

      a. 176000 : 160 = 1100

      b. 32108 : 23 = 1396

      c. 270 : 15 = 18

      d. 26345 : 35 = 752 (dư 25)