Question

Tính nhanh:

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

 

 

 

Answer 1

Giúp với

...

.

Answer 2

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

= -2 + -2 + -2 + -2 + 18

= -8 + 18 

= 10

Answer 3

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

 =10

hok tốt

Answer 4

sai đề ak bạn.

Answer 5

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

Answer 6

\(2-4+6-8+10-12+14-16+18 \)
\(=2+6+10+14+18-\left(4+8+12+16\right)\)
\(=2+18+6+14+10-\left(4+16+8+12\right)\)
\(=20+20+10-\left(20+20\right)\)
\(=50-40\)
\(=10\)

Answer 7

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

= (2-4)+(6-8)+(10-12)+(14-16)+18

= -2 + (-2)+(-2)+(-2) + 18

= 10

Answer 8

= 10 nhé