

0910
Presentation
•
Mathematics
•
4th Grade
•
Practice Problem
•
Hard
黃嘉煒 老師 Wong Ka Wai
Used 6+ times
FREE Resource
37 Slides • 5 Questions
1
乘法
By 黃嘉煒 老師 Wong Ka Wai
性質
運算
應用題
2
三年級的乘法:
3 x 22
3 x 212
一位數 x 兩位數
一位數 x 三位數
3
4
圖二
5
朱古力(4)x 4袋 = 4 x 4 = 16
糖果(3)x 4袋 = 3 x 4 = 12
6
朱古力(4)x 4袋 = 4 x 4 = 16
糖果(3)x 4袋 = 3 x 4 = 12
共有零食:
方法一:4 x 4 + 3 x 4 = 16 + 12 = 28
方法二:(4 + 3) x 4 = 7 x 4 = 28
7
(4 + 3) x 4 = 28
8
用乘法分別計算紅蘋果、青蘋果的數量
再計算兩種蘋果相差的數量
9
(4 + 3) x 4 = 28
10
Multiple Choice
2 x 3 + 8 x 3 = ??
66
88
30
26
11
Multiple Choice
7 x 3 - 2 x 3 = ??
21
15
33
22
12
Multiple Choice
(7 + 3) x 8 = ??
7 x 8 + 3 x 8
7 x 3 + 8 x 3
7 + 3 + 8 + 3
7 - 3 x 8 x 2
13
Multiple Choice
88 x 3 - 8 x 3 =??
88 + 3 x 8
88 - 8 x 3
(88 - 8) x 3
(88 + 3) x 8
14
Multiple Choice
下列哪一題算式的計算結果與 7 x ( 29 – 2 ) 的相同?
7 x 29 – 2
7 x 29 + 7 x 2
7 x 29 – 7 x 2
15
55 x 20 =
直式
16
19 x 35 =
直式
17
103 x 40 =
直式
18
710 x 55 =
直式
19
4 x 8 x 25 =
20
乘法應用題
21
被乘數 x 乘數 = 積
22
23
24
大電視
25
迪迪尼樂園門票 1 張售 650 元,有11 個人一起購票入場,共需付款多少元?
26
印表機列印 1 張紙需時 28 秒,如要列印 12 張紙,共需時多少秒?
27
一箱紅茶有 24 瓶,超級市場店主每天訂購 25 箱,4 天共訂購紅茶多少瓶?
28
29
翔琳每星期存150元,20星期共可存幾元?
30
31
32
33
34
35
例題:
2 X 3
36
5 x 18
37
125 x 8
38
25 x 8
39
23 x 8 + 24 x 8
40
58 x 3 + 29x 3
41
(18 + 20)x 4
42
(30 - 19)x 5
乘法
By 黃嘉煒 老師 Wong Ka Wai
性質
運算
應用題
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