10 + 10 + 10 + 10 + 10
= 20 + 10 + 10 + 10
= 30 + 10 + 10
= 40 + 10
= 50
10 + 10 + 10 + 10 + 10
= 10 . 5
= 50
 

90 + 90 + 90 + 90 + 90
= 180 + 90 + 90 + 90
= 270 + 90 + 90
= 360 + 90
= 450
90 + 90 + 90 + 90 + 90
= 90 . 5
= 450
 

10 + 10 + 10 + 10 + 10

= 10 x 5

= 50

90 + 90 + 90 + 90 + 90

= 90 x 5

= 450

10 + 10 + 10 + 10 + 10 = 10 x 5

                                   =50

90 + 90 + 90 + 90 + 90 = 90 x 5

                                   =450

80 + 10 = 90     30 + 40 = 70     80 + 5 = 85

90 - 80 = 10     70 - 30 = 40     85 - 5 = 80

90 - 10 = 80     70 - 40 = 30     85 - 80 = 5

80+10=90                  30+40=70                         80+5=85

90-80=10                   70-30=40                          85-5=80

90-10=80                   70-40=30                          85-80=5

80 + 10 = 90   30 + 40 = 70  80 + 5 = 85                                                                                                

90 - 80 = 10    70 + 30 = 90   85 - 5 = 80

90 - 10 = 80    70 - 40 = 30     85 - 80  = 5

tự hỏi tự trả lời tí bị trừ điểm hỏi đấp đấy nguyễn minh vũ à

90 + 90 + 90 + 90 + 90 + ( 50 x 10 ) + 90000

=90.5+500+90000

=450+90500

=90950

tick nha

90950

tik tui nha

a) 5760 > 5699

7849 < 8700 

b) 9999 < 10001

10100 > 10080

c) 74685 = 74685

90537 > 90357

My future house will be a UFO. It will be in a mountain. It will surrond by tall, old tree. By this UFO, I will be the first man come to Pluto.  My house will have robots use by solar energy, they will help me house work and take care of my pet.

My future house will be a UFO. It will be in a mountain. It will surrond by tall, old trees. By this UFO, I will fly around galaxy and be a first man come to Pluto. My house will have robots use by solar energy, they will help me housework and take care of my pet

My house in the future will be in a mountain. It won't small , It will very big and large. It will surround by the grass corpets and some old tress. There will be a garden of rose 🌹 behind the house . There will be a large swimming pool on the roof . 

My future house will have a solar energy. There will be some robots in my house , they will help me some housework such as feeding my pets , cook meals , order some food to me. 

I will have a smart TV to help me surt Internet , send and receive e-mails and look to other planets...a smart-clock , a automa dishwasher , a automa washing machine

có thể là mik vt sai Ngữ Pháp gì đó đừng để ý nhá! Nchung sai thì thôi...:)

90 . 10 + 90 . 90

= 90 . ( 90 + 10 )

= 90 . 100

= 9000

90 . 10 + 90 . 90

= 90 . ( 10 + 90 )

= 90 . 100

= 9000

90.10+90.90

=90.(10+90)

=90.100

=9000

a) 90 – ( 30 – 20) = 90 – 10

                   = 80

90 – 30 – 20 = 60 - 20

                  = 40

b) 100 – (60 + 10) = 100 – 70

                   = 30

100 - 60 + 10 = 40 + 10

                   = 50

c) 135 – (30 + 5) = 135 – 35

                   = 100

135 – 30 – 5 = 105 – 5

                   = 100

d) 70 + (40 – 10) = 70 + 30

                   = 100

70 + 40 – 10 = 110 -10

                   = 100

nguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

nguuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

123456818199867765265