1. Module 5
A lesson in a lab

2. 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

3. 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

4. 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

5. 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

6. 978,876,675,467
nine hundred, seventy-eight billion, eight hundred,seventy-six million , six hundred ,seventy-five thousand , four hundred and sixty-seven

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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

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

14. 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？

15. 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

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

17. 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

18. 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

19. Assignments today
Finish exercises 9 on P 93