加减乘除英语讲解(课堂PPT)
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加、减、乘、除
＋－×÷
1
The Expressions
＋ add plus and
－ subtract × multiply
minus
÷ divide
2
addition
•2+4=？
• How much is two plus four?
3
• 用and ,plus , added to 等词表示。 • 2 ＋4 ＝ 6 • 可译为： • 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 .
11
Some fractions
• ¾ three fourths; three quarters • ½ a half • ¼ a/one quarter • 1½ one and a half • 3¼ three and one fourth;
three and one quarter
12
Some examples:
twelve.
9
division
•15÷5＝?
• How much is fifteen divided by five?
10
15÷பைடு நூலகம்＝3
• Fifteen divided by five is three. • Fifteen divided by five
equals/makes four.
4
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.
7
multiplication
• Time (v.) or multiply
• 3×4＝? • How much is three
times four?
8
3×4＝12
• Three times four is twelve. • Multiply three by four, we get
twelve. • Three multiplied by four makes
• 一个半小时： 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
13
14
Thank you!
15
• What’s three plus four? It’s seven.
5
subtraction
•8-3＝?
• How much is ten minus six?
6
8-3=5
• minus • 8-3=5 • 可译为： • • Eight minus three is five . • Eight minus three is equal to five .
＋－×÷
1
The Expressions
＋ add plus and
－ subtract × multiply
minus
÷ divide
2
addition
•2+4=？
• How much is two plus four?
3
• 用and ,plus , added to 等词表示。 • 2 ＋4 ＝ 6 • 可译为： • 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 .
11
Some fractions
• ¾ three fourths; three quarters • ½ a half • ¼ a/one quarter • 1½ one and a half • 3¼ three and one fourth;
three and one quarter
12
Some examples:
twelve.
9
division
•15÷5＝?
• How much is fifteen divided by five?
10
15÷பைடு நூலகம்＝3
• Fifteen divided by five is three. • Fifteen divided by five
equals/makes four.
4
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.
7
multiplication
• Time (v.) or multiply
• 3×4＝? • How much is three
times four?
8
3×4＝12
• Three times four is twelve. • Multiply three by four, we get
twelve. • Three multiplied by four makes
• 一个半小时： 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
13
14
Thank you!
15
• What’s three plus four? It’s seven.
5
subtraction
•8-3＝?
• How much is ten minus six?
6
8-3=5
• minus • 8-3=5 • 可译为： • • Eight minus three is five . • Eight minus three is equal to five .