Select the antonym of the following bold and underlined word in each sentence in the unit

Before you read, work in pairs, ask and answer the questions.

A. While

B. After

C. When

D. By the time

Tính nhanh:

a. ( 1+3+5+7+…+2003+2005) x (125 125 x 127 – 127 127 x 125)

b.  19 , 8 : 0 , 2 x 44 , 44 x 2 x 13 , 2 : 0 , 25 3 , 3 x 88 , 88 : 0 , 5 x 6 , 6 : 0 , 125 x 5

Hay

Đặt tính rồi tính:

a)  271 , 43 : 17

b)  26 , 7 × 1 , 5

c)  13 , 6 + 180

d)  90 , 203 − 24 , 086