a)53.25 - 25.12 + 75.53

=( 53.25 - 25.12 ) + 75.53

=[ 25. ( 53 - 12 ) ] + 75.53

=25.41 + 75.53

=1025 + 75.53

=1025 + 3975

=5000

b)260 : [ 5 + 7. ( 72 : 2^3 - 6 ) ] - 3^2

=260 : [ 12 . (72 : 8 - 6 ) ] - 9

=260 : [ 12 . ( 9 - 6 ) ] - 9

=260 : [ 5 + 7 . 3 ] - 9

=260 : 26 - 9

=10 - 9

=1

I dream of having a robot named Franky. It's a small home robot. Franky can tidy up rooms, make simple meals, and even water my plants. I want Franky because it can help me with daily chores, so I will have more time to relax and play with my friends. 

Question 1: Robots can work as guards in important places.

Question 2: Ha Noi is famous for its delicious street food.

Question 3: What type of house will you live in the future?

Question 4: Pack your lunch in a lunch box instead of a plastic bag.