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VQ
23 tháng 3 2022
10.213
11. 2 giờ 55 phút
12. 4 ngày 21 giờ
13.
a: 6,008
b: 4500
c: 5,628
d: 4,009
PT
1
CM
1 tháng 7 2018
Ta có:
50 − 22 , 5 : 12 , 5 + 36 , 5 : 10 = 50 − 1 , 8 + 3 , 65 = 48 , 2 + 3 , 65 = 51 , 85
Vậy giá trị của biểu thức 50 − 22 , 5 : 12 , 5 + 36 , 5 : 10 là 51,85.
Đáp án D
23 tháng 1 2022
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AK
10 tháng 4 2018
\(3-\frac{4}{5}+\frac{3}{10}\)
\(=\frac{15}{5}-\frac{4}{5}+\frac{3}{10}\)
\(=\frac{11}{5}+\frac{3}{10}\)
\(=\frac{22}{10}+\frac{3}{10}\)
\(=\frac{25}{10}\)
\(=\frac{5}{2}\)
Chúc bạn học tốt !!!
NC
5
17 tháng 12 2017
8,5 + 6,5 - ( 10 - 3,3 )
= 8,5 + 6,5 - 6,7
= 15 - 6,7
= 8,3
10 - 2,42 + 5,58
= 10 - (2,42 + 5,58)
= 10 - 8
= 2
10 - 2,42 + 5,58
= 7,58 + 5,58
= 13,16
Chúc bạn học tốt !!!