6+4=
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2 +4+9+7+5+6+7+8+8+4+6+7+4+6+4+6+6+6+8+4+7+6+7+6
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9+2+5+3+7+8+4+7+4+7+2+4+2+9+6+4+65+6+7+4+6+4+6+3+7+4+8+5+9+08+87+1+2+3+4+2+3+2+5+6+767+5+75+6+4+6+5+66+5+7+546+46+43+6+3+6+4+6+7+8878+68+68+6+7+9+9
\(9+2+5+3+7+8+4+2+9+6+4+65+6+7+4+6+3+7+4+8+5+9+08+87+1+2+3+4+2+3+2+5+6+767+5+75+6+4+6+5+66+5+7+546+46+43+6+3+6+4+6+7+8878+68+68+6+7+9+9=10961\)
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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
, , ?
6…5
3…6
6…1
3…3
6…4
6…3
4…2
3…5
6…2
6…6
2…6
3…4
Đọc tiếp
>, <, =?
| 6…5 | 3…6 | 6…1 | 3…3 |
| 6…4 | 6…3 | 4…2 | 3…5 |
| 6…2 | 6…6 | 2…6 | 3…4 |
Lời giải chi tiết:
| 6 > 5 | 3 < | 6 > 1 | 3 = 3 |
| 6 > 4 | 6 > 3 | 4 > 2 | 3 < 5 |
| 6 > 2 | 6 = 6 | 2 < 6 | 3 < 4 |
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Số?
5 + 1 …
4 + 2 …
3 + 3 …
1 + … 6
… + 4 6
… + 3 6
6 – 5 …
6 – 2 …
6 – 3 …
6 – 1 …
6 – 4 …
6 - … 3
Đọc tiếp
Số?
| 5 + 1 = … | 4 + 2 = … | 3 + 3 = … |
| 1 + … = 6 | … + 4 = 6 | … + 3 = 6 |
| 6 – 5 = … | 6 – 2 = … | 6 – 3 = … |
| 6 – 1 = … | 6 – 4 = … | 6 - … = 3 |
Lời giải chi tiết:
| 5 + 1 = 6 | 4 + 2 = 6 | 3 + 3 = 6 |
| 1 + 5 = 6 | 2 + 4 = 6 | 3 + 3 = 6 |
| 6 – 5 = 1 | 6 – 2 = 4 | 6 – 3 = 3 |
| 6 – 1 = 5 | 6 – 4 = 2 | 6 - 3 = 3 |
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(4+5)*(4+5+6)*(4+5+6+7)*. . . *(4+5+6+...+91)/5*(5+6)*(5+6+7)*...*(5+6+7+...+91)
, , ?
3 + 4 … 6
6 + 1 … 6
5 + 1 … 6
3 + 4 … 7
5 + 2 … 6
7 – 5 … 3
7 – 4 … 4
7 – 2 … 5
7 – 6 … 1
Đọc tiếp
>, <, = ?
| 3 + 4 … 6 | 6 + 1 … 6 | 5 + 1 … 6 |
| 3 + 4 … 7 | 5 + 2 … 6 | 7 – 5 … 3 |
| 7 – 4 … 4 | 7 – 2 … 5 | 7 – 6 … 1 |
Lời giải chi tiết:
| 3 + 4 > 6 | 6 + 1 > 6 | 5 + 1 = 6 |
| 3 + 4 = 7 | 5 + 2 > 6 | 7 – 5 > 3 |
| 7 – 4 < 4 | 7 – 2 = 5 | 7 – 6 = 1 |
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Tính nhẩm:
6 x 4 =
6 x 2 =
6 x 5 =
6 x 1 =
4 : 6 =
12 : 6 =
30 : 6 =
6 : 6 =
24 : 4 =
12 : 2 =
30 : 5 =
6 : 1 =
Học sinh nhẩm và ghi kết quả như sau:
6 x 4 = 24
6 x 2 = 12
6 x 5 = 30
6 x 1 = 6
24 : 6 = 4
12 : 6 = 2
30 : 6 = 5
6 : 6 = 1
24 : 4 = 6
12 : 2 = 6
30 : 5 = 6
6 : 1 = 6
(có thể nêu nhận xét: lấy tích chia cho một thừa số được thừa số kia)
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10+2-3+2+2+2+3+5+9-5-5-4-6+6+8+7+8+9-6+4-5+3-6+3-6+3+5+4+6-3+5-3+4-4+4=
giup minh nhanh nha
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Bài 1:Tính1) (1/2)^3 (3/2)^2 2) (2/3)^3 (3/2)^5 3) (5/4)^5 (4/5)^7 4) (-5/6)^6 (6/5)^8 5)(-4/3)^3 (9/16)^5 6) (1/3)^4 (-9/2)^6 7)(-4/9)^3 (-27/20)^4 8) (0,2)^4 . 5^6 9) (-4/3)^3 (9/16)^5 10) (-0,2)^3 .(-5)^5 11) (-4)^4 .(0,25)^6 12) $^2 . (0,2)^3 13) (0,5)^2 . 2^4 14) (-0,5)^3 .2^6 15) (-0,5)^5 .(-2)^10 16) (0,125)^2 .8^4 17) (0,125)^5 . (-8)^4...
Đọc tiếp
Bài 1:Tính
1) (1/2)^3 (3/2)^2
2) (2/3)^3 (3/2)^5
3) (5/4)^5 (4/5)^7
4) (-5/6)^6 (6/5)^8
5)(-4/3)^3 (9/16)^5
6) (1/3)^4 (-9/2)^6
7)(-4/9)^3 (-27/20)^4
8) (0,2)^4 . 5^6
9) (-4/3)^3 (9/16)^5
10) (-0,2)^3 .(-5)^5
11) (-4)^4 .(0,25)^6
12) $^2 . (0,2)^3
13) (0,5)^2 . 2^4
14) (-0,5)^3 .2^6
15) (-0,5)^5 .(-2)^10
16) (0,125)^2 .8^4
17) (0,125)^5 . (-8)^4
18) (-0,125)^7 . 8^10
19) (-0,1)^4 . 10^7
20) (0,1)^5 . (-10)^10
Giúp mình với ạ,mình cảm ơn ạ
1: =1/8*9/4=9/32
2: =8/27*243/32=9/4
3: =(5/4*4/5)^5*(4/5)^2=16/25
4: \(=\left(-\dfrac{5}{6}\cdot\dfrac{6}{5}\right)^2\cdot\left(\dfrac{6}{5}\right)^2=\dfrac{36}{25}\)
5: \(=\left(-\dfrac{4}{3}\right)^3\cdot\left(\dfrac{3}{4}\right)^{10}=\left(-1\right)\left(\dfrac{3}{4}\right)^7=-\left(\dfrac{3}{4}\right)^7\)
6: \(=\left(\dfrac{1}{3}\cdot\dfrac{-9}{2}\right)^4\left(-\dfrac{9}{2}\right)^2=\left(-\dfrac{3}{2}\right)^4\cdot\dfrac{81}{4}=\dfrac{9}{4}\cdot\dfrac{81}{4}=\dfrac{729}{16}\)
8: =(0,2*5)^4*5^2=25
10: =-0,5^5*2^10
=-0,5^5*2^5*2^5
=-32
13: =(0,5*2)^2*2^2=4
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