深圳牛津7AChapter4newwords.ppt

* * Chapter 4 The world of numbers 1. decimal adj. 小数的，十进位的 n. 小数 2. fraction n. 分数 a fraction of 一小部分 a fraction of a second 一瞬间 3. degree n. 度，度数 10℃ 10 degrees centigrade degree n. 学位 the degree of Master of Arts 文学硕士学位 4. percentage n. 百分数 percent n. 百分之一 30% thirty percent 10%的儿童 ten percent of the children 5. positive number 正数 negative number 负数 Match the numbers with the words. 15 5° 1.7 15% decimal negative number percentage fraction degree 6. odd adj. 奇数的，奇怪的 三是个奇数。 Three is ______ ______ number. an odd experience 一个奇怪的经历 7. even adj. 偶数的，相等的，均衡的 an even number 一个偶数 我们得分现在相等。 Our scores ______ _______ now. an odd are even 8. plus prep. 加 add v. 加，加入 3+4=7 3 ______ 4 _____________________ 7. = 3 _____ 4 is / are / makes / equals 7. = ____ 3 ___ 4 is / are / makes / equals 7. = ___ ____ add 3 to 4, you _____ 7. A+ A plus plus is / are / makes / equals and Add to If you get 9. equal v. 等于 adj. 平等的 All men are equal in the eye of law. 法律面前人人平等。 10. minus prep. 减 subtract v. 减，减去 8 – 5 = 3 8 _______ 5 _________ 3. = 5 _________ from 8 is / equals 3. = If you ________ 5 _____ 8, you ____ 3. -5 minus five minus is / equals subtracted subtract from get 11. multiply v. 乘 multiplies, multiplied times prep. 乘 3 ×5 = 15 _________ 3 _____ 5 __________ 15. = 3 _________ _____ 5 is / equals 15. = 3 ______ 5 is / makes / equals 15. Multiply by is / equals multiplied by times 12. divide v. 除，除以 12 ÷ 4 = 3 12 ________ _______ 4 is / equals 3. divide … into … 把……分成…… 老