Tính nhanh:
12/50 + 8% + 59/100 + 9%
Tính hợp lí :
12/50 + 8% + 59/100 + 9%
\(\frac{12}{50}+8\%+\frac{59}{100}+9\%\)
= \(\frac{24}{100}+\frac{8}{100}+\frac{59}{100}+\frac{9}{100}\)
Sau đó tính
6/25+2/25+59/100+9/100
=8/25+68/100
=1
= ( 12/50 + 8% ) + ( 59/100 + 9%)
= 8/25 + 17/25
= 25/25
= 1
Tính nhanh
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000)
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
a: \(=\dfrac{3}{2}\cdot\dfrac{4}{3}\cdot...\cdot\dfrac{2001}{2000}=\dfrac{2001}{2}\)
b: \(=101\left(34+13-27\right)=101\cdot20=2020\)
c: \(=24\%+8\%+59\%+9\%=1\)
12/50 + 8% + 59/100 + 9%
\(\frac{12}{50}\)+ 8% + \(\frac{59}{100}\) + 9% +
= \(\frac{24}{100}\)+ \(\frac{8}{100}\)+ \(\frac{59}{100}\)+ \(\frac{9}{100}\)
= \(\frac{14+8+59+9}{100}\)
= \(\frac{100}{100}\)
= 1
Chúc bạn học tốt,k cho mik nha!
12/50+8%+59/100+0,09
=\(\frac{24}{100}+\frac{8}{100}+\frac{59}{100}+\frac{9}{100}\)
=1
\(\frac{12}{50}+8\%+\frac{59}{100}+0,09\)
\(=\frac{24}{100}+\frac{8}{100}+\frac{59}{100}+\frac{9}{100}\)
\(=\frac{24+8+59+9}{100}\)
\(=\frac{100}{100}\)
\(=1\)
_Chúc bạn học tốt_
a) ( 1 + 1/2) x ( 1 + 1/3) x ( 1 + 1/4) x ……. X ( 1 + 1/2000 )
b) 101 x 34 + 10,1 x 130 – 1,01 x 2700
c) 12/50 + 8% + 59/100 + 9%
a: \(=\dfrac{3}{2}\cdot\dfrac{4}{3}\cdot...\cdot\dfrac{2001}{2000}=\dfrac{2001}{2}\)
b: \(=10.1\left(340+120-270\right)=10.1\cdot190=101\cdot19=1919\)
c: \(=24\%+8\%+59\%+9\%=1\)
Tính giá trị biểu thức a 1,25*57,43. 325+42,57*4,25
B 4,41:3,17+5,37:3,17.3
C 12/50+8 phần trăm +59/100+9 phần trăm
D 1/3+1/6+1/10+...+1/45
Trả lơi giúp mình với nhé
Thực hiện phép tính (tính nhanh nếu có thể)
a)3 . 52 + 15 . 22 - 26 : 2
b)53. 2 - 100 : 4 + 23. 5
c)62 : 9 + 50 . 2 - 33 . 33
d)32 . 5 + 23 . 10 - 81 : 3
e)513 : 510 - 25 . 22
f)20 : 22 + 59 : 58
a) \(3.5^2+15.2^2-26\div2\)
= 3.25 + 15.4 - 13
= 75 + 60 - 13
= 135 - 13
= 122
b) \(5^3.2-100\div4+2^3.5\)
= 125.2 - 25 + 8.5
= 250 - 25 + 40
= 225 + 40
= 265
c)\(6^2\div9+50.2-3^3.33\)
= 36 : 9 + 100 - 9.33
= 4 + 100 - 297
= 104 - 297
= -193
d)\(3^2.5+2^3.10-81\div3\)
= 9.5 + 8.10 - 27
= 45 + 80 - 27
= 125 - 27
= 98
e) \(5^{13}\div5^{10}-25.2^2\)
= 53 - 25.4
= 125 - 100
= 25
f) \(20\div2^2+5^9\div5^8\)
= 20 : 4 + 5
= 5 + 5
= 10
Tính nhanh
a, 100:4 - 50:2 + 100 =
c, 10000×2 + 60000 =
b, (6×8 - 48) : (10 + 11 + 12 + 13 + 14)
d, (7000 - 3000) × 2 =
Tính nhanh
a) 100 :4 – 50 : 2 + 100
= 25 – 25 + 100
= 0 + 100
= 100
b) (6 × 8 – 48) : (10 + 11 + 12 + 13 + 14)
= (48 – 48) : (10 + 11 + 12 + 13 + 14)
= 0 : (10 + 11 + 12 + 13 + 14)
= 0
c) 10000 × 2 + 60000
= 10000 × 2 + 10000 × 6
= 10000 × (2 + 6)
= 10000 × 8
= 80000
d) (7000 – 3000) × 2 = 4000 × 2 = 8000
bài 1: tính nhanh
a, (1+2+3+4+5+6+7+8+9)
b, 12+13+7+8
c, 50+60+50+40
a, 1+2+3+4+5+6+7+8+9=
(1+9)+(2+8)+(3+7)+(4+6)+5
=10+10+10+10+5
=45
b,(12+8)+(13+7)
=20+20
=40
c,(50+50)+(60+40)
=100+100
=200
(1+2+3+4+5+6+7+8+9)=45
12+13+7+8=40
50+60+50+40=200