Bài 1: Tính tổng :

a) (-24) + 6 + 10 + 24                                              b) 15 +23+( -25) +(-23)

c) (-3) + ( -350 ) + (-7) + 350                                 d) ( -9 ) + ( -11 ) + 21 + ( -1)

e) (-17) + 5 + 8 + 17;                                              h) 30 + 12 + (-20) + (-12);

g) (-4) + (-440) + (-6) + 440;                                 m) (-5) + (-10) + 16 + (-1).

Bài 2: Tính nhanh các tổng sau:

a) (5674 – 97) – 5674                                             b) (-1075 ) – ( 29 – 1075 )

c) (2736 – 75) – 2736;                                            d) (-2002) – (57 – 2002).

Bài 3: Bỏ dấu ngoặc rồi tính:

a) (18 +29 ) + ( 158 – 18 – 29 )                            b) ( 13 – 135 + 49 ) – ( 13 +49)

 c) (27 + 65) + (346 – 27 – 65);                            d) (42 – 69 + 17) – (42 + 17).

Bài 4: Tổng a – (-b + c – d) bằng:

(A) a – b + c – d ;                               (B) a + b + c – d ;

(C) a + b + c + d ;                              (D) a + b – c + d.

Bài 5: Nối tổng ở cột A với kết quả đúng ở cột B

Bà

Chọn đáp án đúng

1. He thinks that ……. lemon juice on fish makes it taste better.

A. many          B. a little          C. little         D. Few

2. January is a cold month in the northern states. There is ….sunshine during that month.

A. not many        B. few        C. a little         D. little

3. Because my family is very poor, my children have …… toys.

A. a few       B. many          C. few            D. little

4. Tom is having a lot of trouble adjusting to eighth grade. He seems to be unpopular. Unfortunately, he has …..friends.

A. a few          B. few        C. many          D. little

5. After I tasted the soup, I added …..salt to it.

A. a few         B. few        C. little         D. a little

6. My previous employer gave me a good recommendation because she makes ….. mistakes in her work.

A. very few      B. very little       C. very less       D. many

7. Does your mom have ….. minutes? I’d like to ask her …….questions. I need …… more information.

A. a few / a little / a little

B. a little / a few / a little

C. a few / a few / a little

D. a little / a few / a few