15+6+4=?
Những câu hỏi liên quan
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5...
Đọc tiếp
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
Khoanh vào phân số lớn hơn 1_3
Tính
1. 6/5 - 1/4 + 4/5 - 3/4
2. 7/9 - 5/12 + 2/9 - 7/12
3. -4/15 + 5/13 - 11/15 + 8/13
4. 9/15 - 7/13 +6/15 - 6/13
5. 12/5 - 3/7 + 3/5 - 4/7
6. 6/5 - 1/4 + 4/5 - 3/4 + 1/2
7. 13/7 - 8/6 + 8/7 - 4/6 - 1/3
Xem thêm câu trả lời
-15/4 . 9/11 + 15/4. 15/11 - 15/4 . 6/11
\(=\dfrac{-15}{4}.\dfrac{9}{11}+\dfrac{15}{4}.\dfrac{15}{11}-\dfrac{15}{4}.\dfrac{6}{11}\)
= \(\dfrac{15}{4}.\dfrac{-9}{11}+\dfrac{15}{4}.\dfrac{15}{11}-\dfrac{15}{4}.\dfrac{6}{11}\)
= \(\dfrac{15}{4}.\left(\dfrac{-9}{11}+\dfrac{15}{11}-\dfrac{6}{11}\right)\)
= \(\dfrac{15}{4}.\left(\dfrac{6}{11}-\dfrac{6}{11}\right)\)
= \(\dfrac{15}{4}.\left(\dfrac{0}{11}\right)\)
= \(\dfrac{15}{4}.0\)
= 0
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Tính
1. 6/5 - 1/4 + 4/5 - 3/4
2. 7/9 - 5/12 + 2/9 - 7/12
3. -4/15 + 5/13 - 11/15 + 8/13
4. 9/15 - 7/13 +6/15 - 6/13
5. 12/5 - 3/7 + 3/5 - 4/7
6. 6/5 - 1/4 + 4/5 - 3/4 + 1/2
7. 13/7 - 8/6 + 8/7 - 4/6 - 1/3
6/5 có nghĩa là sáu phần năm đó nha mn
\(\frac{6}{5}-\frac{1}{4}+\frac{4}{5}-\frac{3}{4}\)
\(=\left(\frac{6}{5}+\frac{4}{5}\right)-\left(\frac{1}{4}+\frac{3}{4}\right)\)
\(=2-1\)
\(=1\)
\(\frac{7}{9}-\frac{5}{12}+\frac{2}{9}-\frac{7}{12}\)
\(=\left(\frac{7}{9}+\frac{2}{9}\right)-\left(\frac{5}{12}+\frac{7}{12}\right)\)
\(=1-1\)
\(=0\)
các câu sau tương tự
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A=1
B=0
C=ÂM 8/15
D=0
E=2
F=3/2
H=2/3
LẦN SAU CHO KHÓ SÍU NHA LỚP 5 CŨNG LÀM ĐC
(4+√15).(√10-√6).√(4-√15)
\(\left(4+\sqrt{15}\right)\cdot\left(\sqrt{10}-\sqrt{6}\right)\cdot\sqrt{4-\sqrt{15}}\)
\(=\left(4+\sqrt{15}\right)\left(8-2\sqrt{15}\right)\)
=32-30
=2
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- 15/4 - 6/17 + 15/4 SOS
\(\dfrac{-15}{4}-\dfrac{6}{7}+\dfrac{15}{4}\\ =\left(\dfrac{-15}{4}+\dfrac{15}{4}\right)-\dfrac{6}{7}\\ =0-\dfrac{6}{7}\\ =\dfrac{-6}{7}\)
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`- 15/4 - 6/17 + 15/4`
`= ( (-15)/4 + 15/4 ) - 6/17 `
`= 0 - 6/17 = -6/17`
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-15/4 - 6/17 + 15/4
-15/4 - 15/4 + 6/17
0 + 6/17
6/17
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Xem thêm câu trả lời
4/7x21/16:5/8=
15/8-4/9x6/8+1/6=
7/15+(5/6-1/3)=
= 3/4 : 5/8 = 6/5
= 15/8 - 1/3 + 1/6 = 37/24 + 1/6 = 41/23
= 7/15 + 1/2 = 29/30
mk có giải cho bạn lần trc rồi ạ!! bạn xem lại đi ạ ;-;"
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\(\dfrac{4}{7}x\dfrac{21}{6}x\dfrac{8}{5}=\dfrac{16}{5}\)
\(\dfrac{15}{8}-\dfrac{4}{9}x\dfrac{6}{8}+\dfrac{1}{6}=\dfrac{41}{24}\)
\(\dfrac{7}{15}+\left(\dfrac{5}{6}-\dfrac{1}{3}\right)=\dfrac{29}{30}\)
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a, 7/15 + 8/15 + 9/16 +7/16=
b, 4/7 * 5/6 + 4/7 * 1/6
a) \(\dfrac{7}{15}+\dfrac{8}{15}+\dfrac{9}{16}+\dfrac{7}{16}\)
\(=\left(\dfrac{7}{15}+\dfrac{8}{15}\right)+\left(\dfrac{9}{16}+\dfrac{7}{16}\right)\)
\(=1+1\)
\(=2\)
b) \(\dfrac{4}{7}\times\dfrac{5}{6}+\dfrac{4}{7}\times\dfrac{1}{6}\)
\(=\dfrac{4}{7}\times\left(\dfrac{5}{6}+\dfrac{1}{6}\right)\)
\(=\dfrac{4}{7}\times1\)
\(=\dfrac{4}{7}\)
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(7/15 + 8 / 15 ) + ( 9/16 +7/16)
1 + 1
2
4/7 . ( 5/6+1/6)
4/7 . 1
4/7
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a) \(=1+1=2\)
b) \(=\dfrac{4}{7}\left(\dfrac{5}{6}+\dfrac{1}{6}\right)=\dfrac{4}{7}\)
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Xem thêm câu trả lời
(4+√15)(√10-√6)×√4-√15
Tính:
2 × 3=… 6 : 3=… 6 : 2=…
3 × 5=… 15 : 3=… 15 : 5=…
5 × 4=… 20 : 5=… 20 : 4=…
2 × 3 = 6 6 : 3 = 2 6 : 2 = 3 |
3 × 5 = 15 15 : 3 = 5 15 : 5 = 3 |
5 × 4 = 20 20 : 5 = 4 20 : 4 = 5 |
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