a)1008

b)22530

c)1028,4

d)16900

a, 1008

b, 22530

c, 1028,4

d, 16900

a) 1008

b) 22530

c) 1028,4

d) 16900

12,6 x 80 = 1008

75,1 x 300 = 7510

25,71 x 400 = 10284

45,25 x 400 = 18100

bài 1

912,714

118,008

31,8865

bài 2

500

200

200

23,12*300=6936

67,38*3000=20314

900*23,12=20808

8000*6,13=49040

23,12*300=6936

67,38*3000=20314

900*23,12=20808

8000*6,13=49040

23,12*300=6936

67,38*3000=20314

900*23,12=20808

8000*6,13=49040

6936

202140

20808

49040

23,12 x 300 = 6936

67,38 x 3000 = 202140

900 x 23,12 = 20808

8000 x 6,13 = 49040

23,12 x 300 = 6936

67,38 x 3000 = 202140

900 x 23,12 = 20808

8000 x 6,13 = 49040

a)

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{47}\\{35}\end{array}}\\\hline{\,\,\,\,82}\end{array}\)                                    \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{82}\\{47}\end{array}}\\\hline{\,\,\,35}\end{array}\)

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{526}\\{147}\end{array}}\\\hline{\,\,\,\,673}\end{array}\)                                \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{673}\\{147}\end{array}}\\\hline{\,\,\,526}\end{array}\)

b) 350 + 42 – 105 = 392 – 105 = 287

     1 000 – 300 + 77 = 700 + 77 = 777.

lỗi

Ảnh lỗi r

Ko phải ảnh

48.92 + 75.1 - 24.02

=(48.92 - 24.02) +75.1

=24.9 + 75.1

=100

Trả lời :

100

Hk tốt