5x5+6=?
25+6=?
6: 2 = ?
25: 5=?
2x3=?
5x5 =?
5x5-6+8=?
8x4x1=?
5x5:5-5+5+6:0 bằng bao nhiêu
Tính nhanh 7/9x3/5+3/5x5/6+3/5x1
\(\frac{7}{9}\times\frac{3}{5}+\frac{3}{5}\times\frac{5}{6}+\frac{3}{5}\times1\)
\(=\frac{3}{5}\times\left(\frac{7}{9}+\frac{5}{6}+1\right)\)
\(=\frac{3}{5}\times\frac{47}{18}\)
\(=\frac{47}{30}\)
#hoktot<3#
1+2x5+6x5-8-8x69-969+5x5+6+4+4+4-5x6
Tính: A) 7/4:11/9+5/4:11/9, B) 28/5:4/5x5/8, C) 2/3x3/6+4/5:5/6-2/5
a: =9/11(7/4+5/4)=9/11x3=27/11
b: \(=\dfrac{28}{5}\cdot\dfrac{5}{8}\cdot\dfrac{5}{4}=\dfrac{28}{8}\cdot\dfrac{5}{4}=\dfrac{140}{32}=\dfrac{35}{8}\)
c: \(=\dfrac{2}{6}+\dfrac{4}{5}\cdot\dfrac{6}{5}-\dfrac{2}{5}=\dfrac{67}{75}\)
a,=(7/4+5/4):11/9
=3:11/9
=27/11
b,=28/5.5/4.5/8
=7.5/8
=35/8
c,=1/3+24/25-2/5
=97/75-2/5
=67/75
7/4:11/9+5/4:11/9
=7/4×9/11+5/4×9/11
=9/11×(7/4+5/4)
=9/11×12/4
=9/11×3
=27/11
b)
28/5:4/5×5/8
=28/5×5/4×5/8
=28/4×5/8
=7×5/8
=35/8
c)
2/3×3/6+4/5:5/6−2/5
=2/6+4/5×6/5−2/5
=1/3+24/25−2/5
=(24/25−2/5)+1/3
=14/25+1/3
=67/75
a)12/15+ 5 b)7/10-3/5 c)3/5x5/6 d)3/5:
a) \(\dfrac{12}{15}+5=\dfrac{4}{5}+5=\dfrac{4}{5}+\dfrac{25}{5}=\dfrac{29}{5}\)
b) \(\dfrac{7}{10}-\dfrac{6}{10}=\dfrac{1}{10}\)
c) \(\dfrac{3}{5}x\dfrac{5}{6}=\dfrac{15}{30}=\dfrac{1}{2}\)
d) lỗi
a) \(\dfrac{12}{15}+5=\dfrac{4}{5}+5=\dfrac{4}{5}+\dfrac{5}{1}=\dfrac{4}{5}+\dfrac{25}{5}=\dfrac{29}{5}\)
b) \(\dfrac{7}{10}-\dfrac{3}{5}=\dfrac{7}{10}-\dfrac{6}{10}=\dfrac{1}{10}\)
c) \(\dfrac{3}{5}\times\dfrac{5}{6}=\dfrac{3\times5}{5\times6}=\dfrac{15}{30}=\dfrac{1}{2}\)
d) Thiếu số
nếu 3x3=6
4x4=12
5x5=20
thì 6x6=???
3X3-3=6
4X4-4=12
5X5-5=20
6X6-6=30
ĐS: 30
Tiếp tục các câu hỏi sai phải chữa lại nhé 5:5x5=6:6x6-1+1
Chắc câu hỏi khó quá các AE ko nói đ thôi hỏi lớp 3 câu này vậy