\(\dfrac{24}{54}\) = \(\dfrac{24:}{54:}\) = \(\dfrac{4}{9}\)

\(\dfrac{24}{54}\) = \(\dfrac{24:6}{54:6}\) = \(\dfrac{4}{9}\)

a 800

b 101

a)278+522=800

b)303:3=101

tớ là đạt đây ra rồi 1232658,2345645

Bài 1.2: Tính nhanh:

5+ 5 + 5 + 5+ 5 + 5 +5+ 5 + 5 +5

25 + 25 + 25 + 25 + 25 + 25 +25 + 25

45 + 45 + 45 + 45 + 15 + 15 + 15 + 15

2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18

125 + 125 + 125 + 125 - 25 - 25 - 25 - 25

A) 2424 : 8 : 3

= 303 : 3

= 101

B) (360 x 25 x 12 ) : 24

= 360 x 25 x 12 : 24

= 360 : 24 x 25 x 12

= 15 x 300

= 4 500

C) ( 750 x 360 x 56 ) : ( 25 x 12 x 7 )

=>\(\frac{750x360x56}{25x12x7}\)

= \(30x30x8\)

= \(900x8\)

=\(7200\)

\(\frac{121212}{141414}\times\frac{1313}{1212}\times\frac{2424}{2424}\)

\(=\frac{6}{7}\times\frac{13}{12}\times1\)

\(=\frac{13}{14}\)

~ Hok tốt ~

kết quả là ; 1313/141414

sau nhắc mik

<

<

=2018

Chi tiết

2018X(1/2+1212/2424)

Rút gon 1212/2424 còn 1/2

1/2+1/2=1

Vậy 2018x1=2018

\(=2018\) x \(\left(\dfrac{1}{2}+\dfrac{1}{2}\right)\)

\(=2018\) x \(1=2018\)

`2424/4545=(2424:303)/(4545:303)=8/15`

= 8/15 

Nhớ tick nha

\(8\times\frac{3333}{2424}\times54\)

\(=8\times\frac{11}{8}\times54\)

\(=11\times54\)

\(=594\)

8x3333/2424x54

=11x54

=594

Đáp số: 594