75/100 + 3/4 x 29 +75% x30 + 0.75 x 40 =?
tối đa 2 cách:3
75/100 + 3/4 x 29 +75% x30 + 0.75 x 40 =?
Tham khảo:
75/100 + 3/4 x 29 + 75% x 30 + 0,75 x 40
= 0,75 + 0,75 x 29 + 0,75 x 30 + 0,75 x 40
= 0,75 x (1 + 29 + 30 + 40)
= 0,75 x 100
= 75
Tính bằng cách nhanh nhất: 75/100+ 3/4 ×29 +75% ×30 + 0.75 ×40
= ( 75 : 100 ) + ( 3: 4 ) + ( 75 : 100 ) x 29 x 30 + 0,75 x 40
= 0,75 + 0,75 + 0,75 x 29 x30 + 0,75 x 40
= 0,75 x ( 29 + 30 + 40 )
= 0,75 x 100
= 75
tham khảo:
= ( 75 : 100 ) + ( 3: 4 ) + ( 75 : 100 ) x 29 x 30 + 0,75 x 40
= 0,75 + 0,75 + 0,75 x 29 x30 + 0,75 x 40
= 0,75 x ( 29 + 30 + 40 )
= 0,75 x 100
= 75
bài 3 : Tính bằng cách thuận tiện nhất
Tính nhanh : 75/100 + 3/4 x 29 + 75% x 30 + 0,75 x 40
75/100 + 3/4 x 29 + 75% x 30 + 0,75 x 40
= 0,75 + 0,75 x 29 + 0,75 x30 + 0,75 x 40
= 0,75 x ( 1 + 29 + 30 + 40 )
= 0,75 x 100
=75
\(\frac{75}{100}+\frac{3}{4}\times29+75\%\times30+0,75\times40\)
\(=\frac{75}{100}\times1+\frac{3\times25}{4\times25}\times29+\frac{75}{100}\times30+\frac{0,75}{1}\times40\)
\(=\frac{75}{100}\times1+\frac{75}{100}\times29+\frac{75}{100}\times30+\frac{0,75\times100}{1\times100}\times40\)
\(=\frac{75}{100}\times1+\frac{75}{100}\times29+\frac{75}{100}\times30+\frac{75}{100}\times40\)
\(=\frac{75}{100}\left(1+29+30+40\right)\)
\(=\frac{75}{100}\times100\)
\(=\frac{75}{100}\times\frac{100}{1}\)
\(=\frac{75}{1}\)
\(=75\)
\(=\frac{75\times100}{100\times1}\)
tính bằng cách thuận tiện 75/100+0,75 x29+75% x30+3/4 x40
\(\dfrac{75}{100}\) + 0,75 x 29 + 75% x 30 + \(\dfrac{3}{4}\) x 40
= 0,75 x 1 + 0,75 x 29 + 0,75 x 30 + 0,75 x 40
= 0,75 x (1 + 29 + 30 + 40)
= 0,75 x 100
= 75
75/100 + 3/4 x 29 + 75% x 30 + 0,75 x 40
\(=\dfrac{3}{4}\left(1+29+30+40\right)=\dfrac{3}{4}\cdot100=75\)
75/100 + 3/4 x 29 + 75% x 30 + 0,75 x 40
\(\frac{75}{100}+\frac{3}{4}\times29+75\%\times30+0,75\times40\)
\(=0,75+0,75\times29+0,75\times30+0,75\times40\)
\(=0,75\times(1+29+30+40)\)
\(=0,75\times100\)
\(=75\)
(75 / 100) + ((3 / 4) x 29) + (75% x 30) + (0,75 x 40) =
75 |
Tính bằng cách thuận tiện
75/100+ 3/4x 29+ 75%x 30+ 0,75x 40
\(\dfrac{75}{100}+\dfrac{3}{4}\times29+75\%\times30+0,75\times40\\ =\dfrac{75}{100}\times1+\dfrac{75}{100}\times29+\dfrac{75}{100}\times30+\dfrac{75}{100}\times40\\ =\dfrac{75}{100}\times\left(1+29+30+40\right)\\ =\dfrac{75}{100}\times100=75\)
\(\dfrac{75}{100}+\dfrac{3}{4}\) x 29 + 75% x 30 + 0,75 x 40
= 0,75 x 1 + 0,75 x 29 + 0,75 x 30 + 0,75 x 40
= 0,75 x (1 + 29 + 30 + 40)
= 0,75 x 100
= 75
75/100 + 3/4 x 29 + 75 % x 30 + 0,75 x 40 =
= 3/4 + 3/4 x 29 + 3/4 x 30 + 3/4 x 40
= 3/4 x ( 1 + 29 + 30 + 40)
= 3/4 x 100
= 75
\(\frac{75}{100}+\frac{3}{4}x29+\frac{75}{100}x30+0,75x40\)
*x là dấu nhân *
\(=\frac{75}{100}x1+\frac{75}{100}x29+\frac{75}{100}x30+\frac{75}{100}x40\)
\(=\frac{75}{100}x\left(1+29+30+40\right)\)
\(=\frac{75}{100}x100\)
\(=75\)
75/100 + 3/4 x 29 + 75/100 x 30 + 0,75 x 40
= 0,75 x 1 + 0,75 x 29 + 0,75 x 30 + 0,75 x 40
= 0,75 x ( 1 + 29 + 30 + 40 )
= 0,75 x 100
= 75