35 x 18 - 9 x 70 + 135

= 630- 630 + 135

=     0        + 135

=     135

\(=9\times\left(70-70\right)+2020\)

\(=0+2020=2020\)

2020

35 x 18 - 9 x 70 + 100

= 35 x 2 x 9 - 9 x 70 + 100

= 70 x 9 - 9 x 70 + 100

= 0 + 100

= 100

Tính nhanh : 

35 × 18 - 9 × 70 + 100

= 35 × ( 2 × 9 ) - 9 × 70 + 100

= 35 × 2 × 9 - 9 × 70 + 100

= ( 35 × 2 ) × 9 - 9 × 70 + 100

= 70 × 9 - 9 × 70 + 100

= 9 × ( 70 - 70 ) + 100

= 9 × 0 + 100

= 0 + 100

= 100

( 35 x 18 - 9 x 70 ) x 2010 x 2011 x 2012 x ... x 2020

= 0 x 2010 x 2011 x 2012 x ... x 2020

= 0 nha !

(35*18-9*70)*2010*2011*.....*2020

=(630-630)*2010*........*2020

=0*2010*.........*2020

=0

CHÚC BẠN HỌC TỐT!

Kết quả là:0

( 35 x 18 - 9 x 70 ) x 2010 x 2011 x ... x 2020

= (35 x 18 - 9 x 35 x 2) x 2010 x 2011 x ... x 2020

= ( 35 x 18 - 18 x 35 ) x 2010 x 2011 x ... x 2020

= 35 x (18 - 18 ) x 2010 x 2011 x ... x 2020

= 35 x 0 x 2010 x 2011 x ... x 2020 

= 0 x 2010 x 2011 x ... x 2020 

= 0

=2020

2020

a)30,04+46,6+52,2+2,2

=30,4+46,6+54,4

=30,4+101

=131,4

b)100-3,5-2,5-4

=100-(3,5+2,5)-4

=100-(6+4)

=100-10

=90

c)0,25x40x9,84

=(0,25x40)x9,84

=10x9,84

=98,4

d)35x18-9x70+100

=35(18-9x2)+100

=35(18-18)+100

=35x0+100

=135

\(30,04+46,6+52,2+2,2\)

\(=76,64+54,4\)

\(=131,04\)

`35 xx 18 - 9 xx 70 + 100`

`=(35 xx 9 xx 2)-(9 xx 35 xx2)+100`

`=0+100`

`=100`

=100

35 x 18 - 9 x 70 + 100

= 35 x 9 x 2 - 9 x 35 x 2 + 100

= 0 + 100

= 100