

เทคนิคคูณเลข 2 หลัก ด้วย 11
Presentation
•
Mathematics
•
5th - 8th Grade
•
Easy
Kaew Sakulsermkraisri
Used 4+ times
FREE Resource
3 Slides • 4 Questions
1
เทคนิคคูณเลข 2 หลัก ด้วย 11

2
Example 1: Calculate 14 x 11.
Solution
นำ 14 แยกกัน แบบนี้ >> 1 _ 4
จากนั้นนำ 1+4 แล้วไปใส่ช่องว่างตรงกลาง >> 1 5 4
ตอบ 14 x 11 = 154
3
Multiple Choice
Calculate 72 x 11.
792
712
782
972
4
Fill in the Blanks
Calculate 43 x 11=?
>write your answer<
Type answer...
5
Example 2: Calculate 49 x 11 =?
Solution
นำ 49 เขียนแยกกัน >> 4 _ 9
นำ 4+9 = 13 แต่ให้ใส่ 3 ตรงกลาง แล้วนำ 1 ไปทดที่เลข 4
จะได้ว่า (4+ทด)39 = 539 นั่นเอง
ตอบ 49 x 11 = 539
6
Multiple Choice
Calculate 57 x 11=?
>Choose one answer<
627
267
527
257
7
Fill in the Blanks
Calculate 77 x 11=?
Type answer...
เทคนิคคูณเลข 2 หลัก ด้วย 11

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