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a) 79,08 + 36,5 = 115,58
b) 3,09 – 0,53 = 2,56
c) 52,8 x 6,3 = 332,64
d) 75,52 : 5 = 15,104
![](https://rs.olm.vn/images/avt/0.png?1311)
Đặt tính rồi tính :
52,8
x
6,3
____
1584
3168
_______
332,64
K NHA
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758,7 + 65,46 = 851,16
4,62 x 35,4 = 163,548
234,8 - 87 = 147,8
225,54 : 6,3 = 35,8
a) \(758,7+65,46=824,16\)
b) \(4,62\times35,4=163,548\)
c) \(234,8-87=147,8\)
d) \(225,54:6,3=35,8\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(123\cdot456+456\cdot321-256\cdot444\)
\(=\left(123+321\right)\cdot456-256\cdot444\)
\(=444\cdot456-256\cdot444\)
\(=444\cdot\left(456-256\right)\)
\(=444\cdot200\)
\(=88800\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
c,123.456456-456.123123
=123.456.1001-456.123.1001
=0
d,42.53+47.156-47.114
=42.53+47.(156-114)
=42.53+47.42
=42.(53+47)
=42.100
=4200
c)123.456456 - 456.123123= 123. 456.1001 -456.1001.123=456.(1001-1001).123=456.0.123=0
D)42.53+47.156-47.114 = 42.53+ [47.(156-114)=42.53+47.42= 42.(53+47)=42.100 = 4200
A) 2,34 b) 5516,595 c)19,63235294 d) 1148,222222 e) 0,2697368421