Đáp án:`2300`
Giải thích các bước giải:
64 × 23 + 37 × 23 -23
= 64 × 23 + 37 × 23 -23 x 1
= ( 64+37-1) x 23
= 100 x 23
= 2300
chúc bạn học tốt , nocopy
Đáp án+Giải thích các bước giải:
`64 × 23 + 37 × 23 -23`
`=64 × 23 + 37 × 23 -23 × 1`
`= 23 × (64+37-1)`
`= 23 × 100`
`= 2300`
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VI Complete the passage below with a suitable comparative form of the adjectives provided. Sometimes I hear adults around me say that it is (0. good) better for children to grow up in the city than in the countryside. They say that the city offers a child more opportunities for (1. high) _______ __ education, and (2. easy)_____________ access to (3. good) _______________ facilities. Life there is (4. exciting) ____________ and (5. convenient) _____________. They may be right, but there’s one thing they might not know. I feel (6. happy) ________ here than in a crowded and noisy city. Country folk are (7. friendly) _________ than city folk. I know every boy in my village. Life here is not as (8. fast) ______________ as that in the city and I feel (9. safe) ______________. Perhaps the (10. good) _______________ place to grow up is the place where you feel at home. VII Complete the sentences with suitable comparative forms of adverbs in the box. 1. Can you speak ______ ? My English is not good. 2. After a hard working day, we usually sleep _________. 3. Nowadays, people dress _______________, so it’s difficult to say which country they are from. 4. It’s not always true that rich people donate _______________ than poor people. 5. If you want to stay slim, you have to eat _______________. VIII Finish the sentences below with a suitable comparative form of hard, early, late, fast, well and badly. 1. Your exam score is low. I am sure you can do _______. 2. We’ll be late for the fair. Can you drive_______? 3. On Sunday, we can get up ________ than usual. 4. The farmers have to work ___________ at harvest time. 5. You look tired. Are you feeling _________ than you did this morning? 6. My mother has to get up _______ than us to milk the cows. IX Underline the correct comparative forms to complete the sentences. 1. People in rural areas of Britain talk optimistically/ more optimistically about the future than city people. 2. In India, rural areas are more popularly/ popular known as the ‘countryside’. 3. A village is less densely populated/ more densely populated than a city. 4. City people seem to react quickly/ more quickly to changes than country people. 5. Medical help can be less easily/ more easily obtained in a city than in the countryside. 6. A buffalo ploughs better/ more well than a horse. X Write the answers to the questions below. 1. Which place is more peaceful, the city or the countryside?→ ___________________________ 2. Which works faster at calculus, a computer or a human being?→ ________________________ 3. Which one is harder, life in a remote area or life in a modern town?→ _______________________ 4. Which city is more expensive, Ho Chi Minh City or Hue?→ ________________________ 5. Who can smell better, animals or human beings? →
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