Page 9 - Our World 2E_AmE_L3_SB- www.english0905.com
P. 9
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NUMBERS Look, listen, and say. TR: 0.8
1 Look, listen, and say. TR: 0.6
20 21 22 23 24
1st first
twenty twenty-one twenty-two twenty-three twenty-four
25 26 27 28 29 2nd second
twenty-five twenty-six twenty-seven twenty-eight twenty-nine
3rd third
30 40 50 60 70
thirty forty fifty sixty seventy 4th fourth
80 90 100 101 102
5th fifth
eighty ninety one hundred one hundred one hundred
and one and two
200
two hundred www.english0905.com
1,000 1,000,000 1,000,000,000 6th sixth 10th tenth 14th fourteenth 18th eighteenth
one thousand one million one billion 7th seventh 11th eleventh 15th fifteenth 19th nineteenth
+ — = 8th eighth 12th twelfth 16th sixteenth 20th twentieth
plus minus equals 9th ninth 13th thirteenth 17th seventeenth 21st twenty-first
2 Work with a partner. Listen. Do the math
Twenty plus
together. Listen to check your answers. TR: 0.7 five equals . . . 4 Ask and answer. Work with a partner.
24 + 2 = 80 + 9 = 300 – 50 = September 15th.
100 + 10 = 35 + 5 = 1,000 + 1,000 = When’s your birthday?
60 + 20 = 40 – 30 = 99 – 9 =
Twenty-five!
6 Unit 0 7
