Arthmetic
Presentation
•
Mathematics
•
3rd - 6th Grade
•
Hard
CSC SCHOOL undefined
Used 7+ times
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25 Slides • 0 Questions
1
Arthmetic/ Số học
Some text here about the topic of discussion
2
Numbers 0 - 10000/ Số từ 0 - 10000
3
One digit numbers
Are numbers from 0 to 9
4
Two digit numbers
Are numbers from 10 to 99
81 - eighty one
5
Three digit numbers
Are numbers from 100 to 999
681 - six hundred and eighty one
6
Four digit numbers
Are numbers from 1000 to 9999
5681 - five thousand six hundred and eighty one
7
Number 10000
10000 - ten thousand
8
Addition/Phép cộng
9
5 + 4 = ?
Answer : 9
10
10 = 1 + 9, 2 + 8, 3 + 7, 4 + 6, 5 + 5
11
7 + 5
3
2
Step 1 : 7 + 3 = 10
Step 2 : 10 + 2 = 12
Answer : 12
12
2681 + 1111
2681
+ 1111
Step 1 : 1 + 1 = 2
Step 2 : 8 + 1 = 9
Step 3 : 6 + 1 = 7
Step 4 : 2 + 1 = 3
3792
13
2681 + 1911
2681
+ 1911
Step 1 : 1 + 1 = 2
Step 2 : 8 + 1 = 9
Step 3 : 6 + 9 = 15, regroup 1 to thousands
Step 4 : 2 + 1 + 1 = 4
4592
1
14
Subtraction/Phép trừ
15
8 - 7
Answer : 1
16
12 - 5
2
3
Step 1 : 12 - 2 = 10
Step 2 : 10 - 3 = 7
Answer : 7
17
2681 - 1111
2681
- 1111
Step 1 : 1 - 1 = 0
Step 2 : 8 - 1 = 7
Step 3 : 6 - 1 = 5
Step 4 : 2 - 1 = 1
1570
18
2681 - 1911
2681
+ 1911
Step 1 : 1 - 1 = 0
Step 2 : 8 - 1 = 7
Step 3 : 16 - 9 = 7, regroup 1 to thousands
Step 4 : 2 - 1 - 1 = 0
770
1
19
Multiplication/Phép nhân
20
3 x 3 = 3 + 3 + 3 = 9
21
2114
x 3
Step 1 : 3 x 4 = 12
Step 2 : 3 x 1 + 1 = 4
Step 3 : 3 x 1 = 3
Step 4 : 3 x 2 = 6
6342
22
Division/Phép chia
23
6 ÷ 2
6
2
3
Step 1 : 6 ÷ 2 = 3
Step 2 : 3 x 2 = 6
Step 3 : 6 - 6 = 0
6
0
24
7 ÷ 2
7
2
3
Step 1 : 7 ÷ 2 = 3
Step 2 : 3 x 2 = 6
Step 3 : 7 - 6 = 1
6
1
25
6766 ÷ 2
6766
2
3383
Step 1 : 6 ÷ 2 = 3
Step 2 : 3 x 2 = 6(0)
Step 3 : 67 - 60 = 07
Step 4 : 7 ÷ 2 = 3
Step 5 : 3 x 2 = 6
Step 6 : 7 - 6 = 1, copy down tens
Step 7 : 16 ÷ 2 = 8
Step 8 : 8 x 2 = 16
Step 9 : 16 - 16 = 0, copy down units
Step 10 : 6 ÷ 2 = 3
Step 11 : 3 x 2 = 6
Step 12 : 6 - 6 = 0
60
7
6
16
16
06
6
0
Arthmetic/ Số học
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