Bài 2: Thực hiện phép tính (tính nhanh nếu có thể): Bài 2: Thực hiện phép tính (tính nhanh nếu có thể): a) 35 - {12 - [(-14) + (-2)]} b) 49 - ( -54) - 23 c) | 31 - 17| - | 13 - 52| d) -|-5| + (-19) + 18 + |11 - 4| - 57 e) 126 + (-20) + |124| - (-320) - |-150| g) ( -17 ) + 5 + 8 + 17 + (-3) h) [(-15) + (-21)] - ( 25 -15 -35 - 21) k) ( 13 - 17) - ( 20 - 17 + 30 + 13) Bài 3: Tính tổng sau: A = 101 + 103 + 105 + ... + 201 B = (-1) + 2 -3 + 4 - 5 + 6 - ... - 99 + 100 Chủ đề 2: Tìm

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V, Dựa vào từ gợi ý đặt câu : 1, There / be / green trees / beautiful flowers / park . ................................................................................................................................................................................... 2, What / be / dress ? --- It / be / purple. ................................................................................................................................................................................... 3, George / have / pink / gray / erasers / two red pencils . ................................................................................................................................................................................... 4, Children / play / volleyball / now . ................................................................................................................................................................................... 5, Mrs. Young / often / travel / work / motorbike . ................................................................................................................................................................................... 6, she / not have / time / write / friends. ................................................................................................................................................................................... 7, Your / mother / ever / travel / work / bus ? ................................................................................................................................................................................... 8, Hoa / sister / listen / music / room / the moment . ................................................................................................................................................................................... 9, brother / live / Paris / and / have / bakery / there ................................................................................................................................................................................. 10, Miss Thuy / wash / hair / because / go / party / there ................................................................................................................................................................................