He/ collect/ books/ whenever/ have/ money.

=> He likes collecting books whenever he has money.

water/you/drink/every day?

=> How much water do you drink every day?

She is cooking and we ( do ) are doing the housework

a) 53² + 106 . 47 + 47²

= 53² + 2 . 53 . 47 + 47²

= ( 53 + 47 )²

= 100²

= 10 000

20. Circle the correct word

1. Don't spend too much/many time watching TV . You haven't finished your essay yet.

2. I haven't got enough /much eggs to make a cake .

3.You've spent too many/much money on these clothes .

4. There are too much/many flowers in the vase.

5.Jenny doesn't have many /enough money to buy a computer.

6. There isn't much/many jam left in the jar

Tính nhanh:

35.34+35.38+65.75+65.45

= 35 . ( 34 + 38 ) + 65 . ( 75 + 45 )

= 35 . 72 + 65 . 120

= 2520 + 7800

= 10 320

Bài 1 : (x - 2005) . 2006 = 0

Tích ( x - 2005 ) . 2009 bằng 0 nên phải có ít nhất thừa số bằng ...0...

Vì 2006 khác 0 nên x - 2005 = ...0...

Vậy x = ...2005...

These students always ( go ) go to school by bus ?

They ( not award ) don't award their children once a week

Does Mr Green ( keep ) keep those medicines out of the children's reach ?