a) 24,125 + 52,25 = 76,375

b) 17,27 + 17,25 + 17,28 = 51,8

c) 450,74 - 170.60 = 280,14

d) 89,14 + 67,12 + 194,18 = 350,44

a) 24 x 125 + 52 x 25

= ( 125 x 52 ) + ( 24 x 25 )

= 6500 + 600

= 7100

b) 17 x 27 + 17 x 25 + 17 x 28

= 17 x ( 27 + 25 + 28 )

= 17 x 80

= 1360

c) mình không biết xin lỗi

d) mình không biết xin lỗi nhé

a 800

b 101

a)278+522=800

b)303:3=101

a) 800 

b) 101 

a. 24 x (-125 + 225)

= 24 x 100

=2400

b. -125 x ( 24 -36 )

= -125 x -12

= 1500

c. 512 x (2 -128+128)

= 512 x 2

= 1024

d. \([4.25].\left[\left(-2\right).\left(-5\right)\right].\left[125.\left(-8\right)\right]\)

= 100.10.(-1000)

= -1000000

a. 24 x (-125 + 225)

= 24 x 100

=2400

b. -125 x ( 24 -36 )

= -125 x -12

= 1500

c. 512 x (2 -128+128)

= 512 x 2

= 1024

d. $[4.25].\left[\left(-2\right).\left(-5\right)\right].\left[125.\left(-8\right)\right]$

= 100.10.(-1000)

= -1000000

(24.125)+(25.28)

=3000+700

=3700

=(24.125).(25.28)

=3000.700

=2100000

\(-23-24-25+123+124+125\\ =\left(123-23\right)+\left(124-24\right)+\left(125-25\right)\\ =100+100+100\\ =300\)

=(-23+123)+(-24+124)+(-25+125)

=100+100+100

=300

=300

\(=125\cdot56\cdot13=7000\cdot13=91000\)

\(8.49.20.125.5=49.\left(20.5\right).\left(125.8\right)=49.100.1000=4900000\)

8.49.20.125.5

= ( 8.125).(20.5).49

= 1 000 . 100.49

=100000 . 49

=4900000

\(72.125.3\)

\(=9.8.125.3\)

\(=\left(8.125\right).\left(9.3\right)\)

\(=1000.27\)

\(=27000\)

27000

(−125). 2. 45. (−8). 50

= [ (-125) . (-8) ] . [ 2. 50 ]. 45

=      1000           .   100    . 45

=        100000 . 45 

=              4500000