1129 Lesson

6 Slides • 7 Questions

1

倍數與因數

2

倍數與因數

找倍數的方法
找因數的方法

3

倍數與因數的關係😕

4

倍數與因數的關係😕

2 x 6 = 12

5

Poll

測試時間！

你準備好未？

準備好

未

6

Multiple Choice

7的最初5個倍數是?

1

1,2,3,4,5,6,7

2

7,14,21,28,35

3

1,7

4

5,7,14

7

Draw

9的第8個倍數是多少？

8

Draw

12 ÷ 1 =12

12 ÷ 2 = 6

12 ÷ 3 = 4

找出12的所有因數。

9

Draw

99 = 1 x 99

99 = 3 x 33

99 = ★ x 11

★代表的數字是甚麼？

10

Multiple Choice

100最大的因數是?

1

2

100

3

無限

4

90

11

Multiple Choice

16最小的因數是?

1

0

2

1

3

無限

4

16

12

最大/小的因數🙂

13

依各數的因數數量，分成兩類：

	列出所有因數	只有2個因數	多於2個因數
例子：4	1，2，4
5
9
17
18
31
99

倍數與因數

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