TINH BANG CACH THUAN TIEN NHAT
2018 * { 1212/2424 }
CAU HOI NAY VIET THIEU, VIET LAI
TINH BANG CACH THUAN TIEN NHAT
2018 * {1/2 + 1212/2424 }
Ta có:
\(\frac{1212}{2424}=\frac{1}{2}\)
\(\Rightarrow2018.\left(\frac{1}{2}+\frac{1}{2}\right)=2018.1=2018\)
chia 101/101 để ra được 1/2
tinh bang cach thuan tien nhat phep tinh 1212/1515
1212/1515 = 1212 :1515
= 12 x 101 : 15 x 101
= 12/15
dinh hoang vu
\(\frac{1212}{1515}=\frac{1212\div101}{1515\div101}\)
\(=\frac{12}{15}=\frac{4}{5}\)
\(\frac{1212}{1515}=\frac{2^2.3.101}{3.5.101}=\frac{2^2}{5}=\frac{4}{5}\)
TINH BANG CACH THUAN TIEN NHAT
\(\dfrac{1}{3}+\dfrac{6}{5}-\dfrac{1}{5}+\dfrac{2}{3}=2\)
tinh bang cach thuan tien 2x3x4x5
2 x 3 x 4 x 5
= 6 x 20
= 120
=[ 2 x 5 ] x [ 3 x 4 ]
= 10 x 12
= 120
Tinh bang cach thuan tien 50056456+56442424455x2
50056456+(56442424455x2)=50056456+112884848910
=112934905366
tinh bang cach thuan tien nhat: 2,5x12,5x8x0,4
2,5 x 12 ,5 x 8 x 0,4=(2,5 x 0,4 ) x(12,5 x8)
=1x100=100
=2,5 x 12,5 x 8 x 0,4
=(2,5 x 0,4) x (12,5 x 8)
=1 x 100
=100
Tính bằng cách thuận tiện nhất: 2,5x12,5x8x0,4=100
k mik nha
Tinh bang cach thuan tien nhat:25x20x125x8-8x20x5x125
25x20x125x8-8x20x5x125
=(25x8)x(20x125)-(20x5)x(8x125)
=200x2500-100x1000
=500000-100000=400000
mk tính giống bạn kia
tinh bang cach thuan tien nhat; 476*72+476*28
476x72+476x28
=476x(72+28)
=476x100
=47 600
tinh bang cach thuan tien nhat; 54*342-44*342
54x342-44x342
=342x(54-44)
=342x10
=3 420