![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
1) 1996 + 3992 + 5988 + 7984
= 1996 x 1 + 1996 x 2 + 1996 x 3 + 1996 x 4
= 1996 x ( 1 + 2 + 3 + 4)
= 1996 x 10 = 19960
2) 2 x 3 x 4 x 8 x 50 x 25 x 125
= 3 x (2 x 50) x (4 x 25) x (8 x 125)
= 3 x 100 x 100 x 1000
= 30.000.000
3(45 x 46 + 47 x 48) x (51 x 52 - 49 x 48) x (45 x 128 - 90 x 64)
x (1995 x 1996 + 1997 x 1998)
Ta thÊy : 45 x 128 - 90 x 64
= 45 x 2 x 64 - 90 x 64
= 90 x 64 - 90 x 64
= 0
1) 1996 + 3992 + 5988 + 7984
= 1996 x 1 + 1996 x 2 + 1996 x 3 + 1996 x 4
= 1996 x ( 1 + 2 + 3 + 4)
= 1996 x 10 = 19960
2) 2 x 3 x 4 x 8 x 50 x 25 x 125
= 3 x (2 x 50) x (4 x 25) x (8 x 125)
= 3 x 100 x 100 x 1000
= 30.000.000
3(45 x 46 + 47 x 48) x (51 x 52 - 49 x 48) x (45 x 128 - 90 x 64)
x (1995 x 1996 + 1997 x 1998)
Ta thÊy : 45 x 128 - 90 x 64
= 45 x 2 x 64 - 90 x 64
= 90 x 64 - 90 x 64
= 0
L I K E NHÁ BẠN^^
![](https://rs.olm.vn/images/avt/0.png?1311)
2016 x 14 + 2016 x 85 + 2016
= 2016 x 14 + 2016 x 85 + 2016 x 1
= 2016 x (14 + 85 + 1)
= 2016 x 100 = 201600
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 4/15 x 2016/2018+ 4/15 x 3/2018- 4/15 x 1/2018
= 4/15 x (2016/2018 + 3/2018 - 1/2018)
= 4/15 x (\(1\frac{1}{2018}\)-1/2018)
=4/15 x 1
= 4/15
b) 8/15 x 8 - 2 x 8/15+3 x 8/15+ 8/15
= 8/15 x ( 8 - 2 + 3 + 1)
= 8/15 x 10
= 80/15 => \(5\frac{1}{3}\)
Mấy cái kia mình lười làm phân số nên mình chỉ viết rõ hỗn số thôi, bạn thông cảm nha. Chúc bạn học giỏi <3
![](https://rs.olm.vn/images/avt/0.png?1311)
1996 +3992 +5988 +7984 = 19960
2 X 3 X 4 X 8 X 50 X125= 1200000
![](https://rs.olm.vn/images/avt/0.png?1311)
a.(64 - 32 ) :8 = 32 : 8 = 4
b. 36 x 2 x7 + 36 x 86
= 36 x (14 + 86)
= 36 x 100
= 3600
68:8 - 32 : 8
= ( 68 - 32): 8
= 36 : 8
= 4,5
72 x 7 + 36 x 86
= 72 x 7 + 36 x 2 x 43
= 72 x 7 + 72 x 43
= 72 x ( 7 + 43)
= 72 x 50
= 3600
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\((\)125-120\()\)x45
5x45=225
\(\dfrac{30x25x7x8}{75x8x12x14}\)=\(\dfrac{10\cdot1\cdot7\cdot1}{1\cdot1\cdot1\cdot12\cdot2}\)=\(\dfrac{70}{24}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
8 x 2016 + 8 x 7984
= 8 x ( 2016 + 7984 )
= 8 x 10 000
= 80 000
8x2016+8x7984
=8x(2016+7984)
=8x10000
=80000
chúc bạn may mắn@@@