加減乘除英語(yǔ)講解.ppt

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加、減、乘、除,＋－×÷,The Expressions,addition,2+4=？ How much is two plus four?,用and ,plus , added to 等詞表示。 2 ＋4 ＝ 6 可譯為： Two and four is six . Two plus four is equal to six . Two added to four equals six . Two and four makes six . Two plus four will be six . If you add two to four , you get six .,3+4=7,Three plus four is seven. Three and four makes seven. equal So, we can say: Three and four is equal to seven. Three added to four equals seven. What’s three plus four? It’s seven.,subtraction,8-3＝? How much is ten minus six?,8-3=5,minus 8-3=5 可譯為： Eight minus three is five . Eight minus three is equal to five .,multiplication,Time (v.) or multiply 3×4＝? How much is three times four?,3×4＝12,Three times four is twelve. Multiply three by four, we get twelve. Three multiplied by four makes twelve.,division,15÷5＝? How much is fifteen divided by five?,15÷5＝3,Fifteen divided by five is three. Fifteen divided by five equals/makes four.,Some fractions,? three fourths; three quarters ? a half ? a/one quarter 1? one and a half 3? three and one fourth; three and one quarter,Some examples: 一個(gè)半小時(shí)： one and a half hours 二又四分之三米： two and three-fourths meters 五分之四英寸： four-fifths inch,Thank you!,