Unit Four Lesson Two

Maths in English

1. one2. two3. three4. four 5. five6. six7. seven 8. eight9. nine 10. ten11. eleven12. twelve

1. first2. second3. third4. fourth 5. fifth6. sixth7. seventh 8. eighth9. ninth 10. tenth11. eleventh12. twelfth

13. thirteen14. fourteen15. fifteen16. sixteen17. seventeen18. eighteen19. nineteen

13. thirteenth14. fourteenth15. fifteenth16. sixteenth17. seventeenth18. eighteenth19. nineteenth

20. twenty30. thirty40. forty50. fifty60. sixty70. seventy80. eighty90. ninety

20. twentieth30. thirtieth40. fortieth50. fiftieth60. sixtieth70. seventieth80. eightieth90. ninetieth

21. twenty-one32. thirty-two43. forty-three54. fifty-four65. sixty-five76. seventy-six87. eighty-seven99. ninety-nine100.one hundred101.one hundred and one

21. twenty-first32. thirty-second43. forty-third54. fifty-fourth65. sixty-fifth76. seventy-sixth87. eighty-seventh99. ninety-ninth100.one hundredth101.one hundred and first

+-×

÷=

plus

minus

times

divided by

equal

//

/’/

//

/’/

/’/

加减乘除的不同表达方法

plus 加法运算

4 + 3 = 7

4 plus 3 equals 7. is

10 - 6 = 4

10 minus 6 is/equals 4.

minus 减法运算

3 × 5 = 15

3 times 5 is/equals 15.

times 乘法运算

32 ÷ 4 = 8

32 divided by 4 is/equals 8.

divided by 除法运算

加减乘除的不同表达方式：1) plus 加法运算4 + 3 = 7 4 plus 3 equals 7.

2) minus 减法运算10- 6 = 4 10 minus 6 equals 4.

3) times 乘法运算 3×5 = 15 3 times 5 equals 15.

4) divide 除法运算 32÷4=8 32 divided by 4 equals 8.

Put the following into English ：1)15 + 8 = 23

2)18- 6 = 12

3) 4×9 = 36

4)40÷4 = 10

15 plus 8 equals 23.

18 minus 6 equals 12.

4 times 9 equals 36.

40 divided by 4 equals 10.

16 + 9 =

47 - 9 =

7 ×8 =

54÷6 =

28 + 22=

75 - 45=

12 ×5=

88÷11=

Model:

A : How much is 16 plus

9 ?

B : 16 plus 9 equals 25 .

Try to get 24 from the four

numbers :

5-3=22+1=3

3×8=24

Try to get 24 from the four

numbers :

7+5=1210-8=2

12×2=24

Try to get 24 from the four

numbers :

6-4=22×7=14

14+10=24

Try to get 24 from the four

numbers :

9-4=55×5=25

25-1=24

Try to get 24 from the four

numbers :

3×8=24

7-6=1

7+1=8

Try to get 24 from the four

numbers :

3×8=24

10-7=3

9÷3=3

Listening

1.11+14=252.17-5=123. 6×9=544. 100÷25=45. 48+52=1006. 98-13=857. 5×40=200

Model:A:How much is 11 plus 14?B:11 plus 14 equals 25.

Workbook p 63Read the following sums in English.1. 16+9=25 Sixteen plus nine equals twenty-five.2. 47-9=383. 7×8=564. 54÷6=95. 28+22=506. 75-45=307. 12×5=608. 88÷11=8

Forty-seven minus 9 equals thirty-eight.Seven times eight equals fifty-six.Fifty-four divided by six equals nine.Twenty-eight plus twenty-two equals fifty.

Seventy-five minus forty-five equals thirty.Twelve times 5 equals sixty.

Eighty-eight divided by eleven equals eight.

Homework1. Put the following into English:3+5=816-4=124×3=1240÷4=107×11=7772÷6=122. 完成补充练习3. 听、读本课词汇及课文 5 遍。

3+5=816-4=124×3=1240÷4=107×11=7772÷6=12

Three plus five equals eight.Sixteen minus four equals twelve.Four times three equals twelve.Forty divided by four equals ten.

Seven times eleven equals seventy-seven.

Seventy-two divided by six equals twelve.

Questions:

1.Where are the students ?

2.Who is the boy standing in the

middle of the classroom ?

3.What are they doing now ?

They are in the

classroom .

The

monitor.

They are having a maths contest.

Student A Student B

10×2= 20 10 km/h

A can skateboard twice as fast as B.

Mary John

12-2=10 She was twice John’s age 2

years ago.

(12-2) ÷2=5 2 years ago

12 7 This year