Module 5 A lesson in a lab

Can you say the following in English correctly? 1,000 2,000 12,000 112,000 796,000 one thousand two thousand twelve thousand one hundred , twelve thousand seven hundred ,ninety-six thousand

two hundred ,twelve million 879,457 eight hundred, seventy-nine thousand, four hundred and fifty-seven 1,000,000 9,000,000 32,000,000 212,000,000 one million nine million thirty-two million two hundred ,twelve million

988,766,688 nine hundred ,eighty-eight million ,seven hundred, sixty-six thousand ,six hundred and eighty-eight 987,654,321 nine hundred ,eighty-seven million, six hundred,fifty-four thousand, three hundred and twenty-one

1,000,000,000 one billion 9,000,000,000 nine billion thirty-two billion 32,000,000,000 564,865,000,000 five hundred, sixty-four billion, eight hundred, sixty-five million

978,876,675,467 nine hundred, seventy-eight billion, eight hundred,seventy-six million , six hundred ,seventy-five thousand , four hundred and sixty-seven

practice Let’s have a match to say who can say the following numbers correctly and quickly. 765,847 seven hundred ,sixty-five thousand, eight hundred and forty-seven

2. 756,980,000 seven hundred ,fifty-six million, nine hundred and eighty thousand 3. 345,567,887,987 three hundred ,forty-five billion, five hundred, sixty-seven million, eight hundred ,eighty-seven thousand, nine hundred and eighty-seven

4. 897,786,000,576 eight hundred, ninety-seven billion, seven hundred, eighty-six million, five hundred and seventy-six 5. 786,087,670,756 seven hundred, eighty-six billion, eighty-seven million, six hundred, seventy thousand, seven hundred and fifty-six

6. 987,765,654,345 nine hundred eighty-seven billion, seven hundred ,sixty-five million, six hundred ,fifty-four thousand, three hundred and forty-five

Read these questions aloud and say the answers. What is ½ of 6,000,000? 2. How much is 35,246,000 plus 12,800,000? 3. What is 25%of 200,000,000? three million forty-eight million , forty-six thousand fifty million

4. How much is 260,408,396 5,284,700? two hundred, sixty-five million, six hundred, ninety-three thousand, ninety-six 5. What is ¾ of 1,000,500,000? seven hundred, fifty million, three hundred, seventy-five thousand 6. What is 10% of 800,000,000 ? eighty million

Can you say the following in English correctly? one fifth one sixth one seventh four sevenths 1/5 1/6 1/7 4/7

ninety-seven one hundred and elevenths seven tenths ninety-seven one hundred and elevenths forty-five eighty-sevenths 7/10 97/111 45/87 总结: 你能看出他们有什么特点吗？

另外, 还有几个特殊表达的情况: 1/2 one half 1/4 one quarter 1/3 one third 3/4 分子用基数词,分母用序数词;分子大于1,分母的序数词需要加s。 另外, 还有几个特殊表达的情况: 1/2 1/4 1/3 3/4 2/3 one half one quarter one third three quarters two thirds

practice Now let’s say:2/5 5/8 9/10 3/8 5/6

Can you say the following in English correctly? 0.5 0.8 0.76 1.23 point five point eight point seven six one point two three

23.45 100.32 87.675 7.564 twenty-three point four five one hundred point three two eighty-seven point six seven seven point five six four

Assignments today Finish exercises 9 on P 93