tinh thuan tien
4/25 + 6% + 41/100 + 0,37
Tinh banh cách thuan tien:
a) 0,19 + 0,28 + 0,37 +..... + 0,73 + 0,82 + 0,91
\(0,19+0,28+0,37+...+0,73+0,82+0,91\)
\(=\left[0,19+0,91\right]+\left[0,28+0,82\right]+\left[0,37+0,73\right]+\left[0,45+0,54\right]\)
\(=1,1+1,1+1,1+1,1\)
\(=4,4\)
a)=(0,19+0,91)+(0,28+0,82)+(0,37+0,73)+(0,46+0,64)+(0,55+0,55)
= 1,1 + 1,1 + 1,1 + 1,1 + 1,1
=5,5
= (0,19 + 0,91) + (0,28 + 0,82) + (0,37 + 0,73) + (0,46 + 0, 64) + (0,55 + 0,45) + (0,64 + 0,46) = 1 x 6 = 6
tinh thuan tien : 37/25: 5/4: 74/25
6/11:4/3:5/11:4/3
( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 6 x 7 )
tinh bang cach thuan tien nhat
( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 6 x 7 )
= ( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 42 )
= ( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x 0
= 0
tinh thuan tien 650 : 25 - 325 : 25 - 225 : 25
\(650:25-325:25-225:25\)
\(=\left(650-325-225\right):25\)
\(=100:25\)
\(=4\)
tinh thuan tien .
a , 25 x34 x4 ; b , 128 x93 128 x
tinh
39275 tru 326 ; 722 chia 125 cong 25 nhan 100
tinh bang cach thuan tien;
1234+1357+3456+9753
1+2+3+...+99+100
2+4+6+...+98+100
a) = (1234+3456)+(1357+9753)
= 4690+11110
= 15800
b
tớ góp ý cho cậu là gép cặp vào cho thành số tròn chục thì ra
1234+1357+3456+9753
= ( 1234 + 3456 ) + ( 1347 + 9753 )
= 5000 + 10 000
= 15 000
1+2+3+...+99+100
= ( 1 + 100 ) + ( 2 + 99 ) + ... + ( 50 + 51 )
50 Cặp số
= 101 x 50
= 5 050
2+4+6+...+98+100
= ( 2 + 100 ) + ( 4 + 98 ) + ... + ( 48 + 52 )
25 cặp số
= 102 x 25
= 2550
2+3+...+99+1002+4+6+...+98+100
= (
Tinh bang cach thuan tien :
41 / 27 x 13 / 18 - 13 / 18 x 14 / 27
41 / 27 x 13 / 18 - 13 / 18 x 14 / 27 = ( 41 / 27 - 14 / 27 ) x 13 / 18 = 27 / 27 x 13 / 18 = 1 x 13 / 18 = 13 / 18
Tinh gia tri bieu thuc : 170 + 9 + 6/100 + 3/10 ; tinh bang cach thuan tien : 1/2 : 0.5 - 1/4 : 0.25 + 1/8 : 0.125 - 1/10 : 0.1
725÷25+525÷25 tinh bang cach thuan tien
\(725:25+525:25\)
\(=\left(725+525\right):25\)
\(=1250:25\)
\(=50\)
k mk nha
thank you
725 : 25 + 525 : 25
= ( 725 + 525 ) : 25
= 1250 : 25
= 50
k mk nha
Mk cảm ơn bạn nhiều
Thank you so much !
\(725:25+525:25\)
\(=\left(725+525\right):25\)
\(=1250:25\)
\(=50\)