a) 9 x 24 x 25

=216x25

=5400

b) 12 x 125 x 54

=1500x54

=81000

c) 64 x 125 x 875

=8000x875

=7000000

d) 425 x 7

a) 9 x 24 x 25

b) 12 x 125 x 54

c) 64 x 125 x 875

d) 425 x 7 x4 - 170 x 60

=2975x4 - 170 x 60

=11900- 170 x 60

=11900-10200

=1700

e) 8 x 9 x 14 + 6 x 7 x 12 + 19 x 4 x 18

=1008+504+1368

=2880

a = 5400 

b = 81000

c = 7 000 000 

d = 108800 

e = 3600 nhé bạn 

k cho mình nha , cảm ơn nhiều

a,9 x 24 x 25= 5.400

b,12 x125 x54= 81.000

c,64 x 125 x 875 =7.000.000

d,425 x 7 x 4 - 170 x 60=1.700

e,8 x 9 x 14 + 6 x 17 x 12 +19 x 4 x18=3.600

4 × 125 × 25 × 8

= (4 × 25) × (125 × 8)

= 100 × 1000

= 100 000

2 × 8 × 50 × 25 × 125

= (2 × 50) × (8 × 125) × 25

= 100 × 1000 × 125

= 12 500 000

2 × 3 × 4 × 5 × 50 × 25

= (2 × 50) × (4 × 25) × (3 × 5)

= 100 × 100 × 15

= 150 000

25 × 20 × 125 × 8 - 8 × 20 × 5 × 125

= 8 × 125 × 20 × (25 - 5)

= 1000 × 20 × 20

= 400 000

- (25 x 4) x (125 x8)=100 x 1000 =100000

- (50 x 2) x (8 x 125) x 25=100 x 1000 x 25 =2500000

- (2 x 50 ) x (4 x 25) x (3 x5)=100 x 100 x 15=150000

- 25 x 20 x125 x 8 - 5

= (20 x 5) x (125 x 8) -25=100 x 1000 -5 =100000 - 5 =99995

4 *125*25*8

=4*25*125*8

=100*1000

=100000

2*8*50*25*125

=2*50*8*125*25

=100*1000*25

=2500000

2*3*4*5*50*25

=2*50*4*25*3*5

=100*100*15

=150000

25*20*125*8-8*20*5*125

=25*4*5*125*8-8*125*20*5

=100*1000*5-1000*100

=500000-100000

=400000

=

a) 4.25-12.5+170:10

=100-60+17

=40+17

=57

b) (7+3³:3²).4-3

=(7+3).4-3

=10.4-3

=40-3

=37

c) 12:{400:[500-(125+25.7)]}

=12:{400:[500-(125+175)]}

=12:{400:[500-300]}

=12:{400:200}

=12:2

=6

d) 168+{[2.(2⁴+3²)-256⁰]:7²}

=168+{[2.(16+9)-1]:49}

=168+{[2.25-1]:49}

=168+{[50-1]:49}

=168+{49:49}

=168+1

=169

\(A=\frac{8.4.125.25+96524+476}{10.125.4.25.8}\)

\(A=\frac{1000.100+96524+476}{10.1000.100}\)

\(A=\frac{100000+96524+476}{1000000}\)

\(A=\frac{100000+97000}{1000000}=\frac{197000}{1000000}=\frac{197}{1000}\)

\(A=0,197\)

A = 100000 + 96524 + 4760000

A = 4956524

ý mình là rút gọn phân số này đi và ko cần tính a

a) \(125\times25\times8\times4\)
\(\Rightarrow\left(125\times8\right)\times\left(25\times4\right)\)
\(\Rightarrow1000\times100\)
\(\Rightarrow100000\)

\(\text{a. 125 x 25 x 8 x 4 }\\ =125.8.25.4\\ =1000.100=100000\)

\(\text{ b. 25 x 32 x 125 x 15}\\ =25.15.32.125\\ =375.4000=1500000\)

b.25 x 32 x 125 x 15=25 x 4 x 8 x 125 x 15

                                =(25 x 4) x (125 x 8) x15

                                =100 x 1000 x 15 = 1500000

\(4.125.25.8\)

\(=\left(4.25\right).\left(125.8\right)\)

\(=100.1000\)

\(=100000\)

\(2.3.4.5.50.25\)

\(=\left(2.50\right).\left(4.25\right).\left(3.4.5\right)\)

\(=100.100.60\)

\(=10000.60\)

\(=600000\)

\(2.8.50.25.125\)

\(=\left(2.50\right).\left(8.125\right).25\)

\(=100.1000.25\)

\(=100000.25\)

\(=2500000\)