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Oral Calculation 1×5= ( ) 1×10= ( )

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Presentation on theme: "Oral Calculation 1×5= ( ) 1×10= ( )"— Presentation transcript:

1 5 10 35 70 20 60 25 50 40 45 Oral Calculation 1×5= ( ) 1×10= ( )
1×5= ( ) ×10= ( ) 5×7= ( ) ×10= ( ) 4×5= ( ) ×10= ( ) 5×5= ( ) ×10= ( ) 9×5= ( ) ×10= ( ) 5 10 35 70 20 60 25 50 45 40 Do you find anything in common? YOUR COMPANY SLOGAN GOES HERE

2 5、10的乘法 Recognition of Multiplication of 5 and 10
Hyacinth Class

3 Round 1 What do you Find?

4 Number Line 10 20 30 40 60 50 70 80 90 I want to draw 1 times,
2 times,3 times …… of 5 I also want to draw 1 times, 2 times,3 times …… of 10 10 20 30 40 60 50 70 80 90

5 Let‘s draw it. 10 20 30 40 60 50 70 80 90 Please use to mark the multiples of 5 and 10 respectively in the table. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5的倍数 10的倍数 YOUR COMPANY SLOGAN GOES HERE

6 What can you find? 5的倍数也都是10的倍数吗?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5的倍数 10的倍数 我们发现:10的倍数都是5的倍数 (All multiples of 10 are multiples of 5 ) 5的倍数也都是10的倍数吗? YOUR COMPANY SLOGAN GOES HERE

7 What can you find? 5的倍数有:(Let’s list the multiplication of 5) 个位数字是0或者5的数,一定是5的倍数; 个位数字是0的数,一定是10的倍数。 5、 10、 15、 20、 25、 30、 35、 40、 45、 50、 10的倍数有:(Let’s list the multiplication of 10) 10、 20、 30、 40、 50、 60、 70、 80、 90、 100 Is the vaule in the ones place regular?

8 Game Time: The rule is : 1、If you see the multiple of 5,Please 2、If you see the multiple of 10,Please 3、If the number neither the multiple of 10 or 5,Please 95 5 33 60 25 100 999

9 Challenge Time: 三、按要求填数: 2 16 1 0 5的倍数: 2 16 1 0 10的倍数:

10 Round 2 What can you Fill in?

11 For help = 1张10元=2张5元 ( )张10元=4张5元 3张10元=( )张5元

12 2 4 6 5 4 6 Fill in the blank: 12 Let‘s say:
10的1倍是5的2倍(1 times of 10 is 2 times of 5) 1个十是2个5(1 ten is 2 five) YOUR COMPANY SLOGAN GOES HERE

13 Round 3 What can you Solve?

14 Problem Solving: 1、数一数,下图一共有多少个苹果?你能想出几种不同的分法?

15 Ethan’s Diary: 今天,真的是最开心的一天。妈妈给了我50元钱,我终于可以买自己想吃的零食啦! 我去超市买了4个
今天,真的是最开心的一天。妈妈给了我50元钱,我终于可以买自己想吃的零食啦! 我去超市买了4个 每个冰淇淋才5元钱呢!剩下的钱我又去买了我最爱的热狗 ,你能猜到我吃了几根吗? 对了,每个热狗10元钱呢!好贵呀!


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