125 x 127 x 8 - 25 x 170 x 4
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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
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
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) \(125\times25\times8\times4\)
\(\Rightarrow\left(125\times8\right)\times\left(25\times4\right)\)
\(\Rightarrow1000\times100\)
\(\Rightarrow100000\)
125*127*8-25*170*4
=(125*8)*127-(25*4)*170
=1000*127-100*170
=127 000 - 17 000=110 000