Western Normal University Edition First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
People's Education Press Second Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Qingdao Edition Seventh Grade Mathematics Volume 1
Hebei Education Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Eighth Grade Mathematics Volume 1
People's Education High School Mathematics Edition B Compulsory Course 2
People's Education Press First Grade Mathematics Volume 2
Jiangsu Education Edition Fourth Grade Mathematics Volume 1
Qingdao Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Qingdao Edition First Grade Mathematics Volume 2 | pptx | 6 MB |
Description
"Beachside" PPT courseware 3
Two-digit plus two-digit addition without carry
Two-digit plus two-digit carry addition
Subtracting two digits from two digits without stepping back
1. The same digits must be aligned
2. Starting from everyone’s addition (subtraction)
3. When the ones digit reaches ten, advance one to the tens digit.
Exercise 1
11 + 23 = 43 + 34 =
32 + 44 = 52 + 23 =
25 + 64 = 36 + 42 =
22 + 45 = 14 + 43 =
Exercise 2
18 + 24 = 56 + 35 =
27 + 36 = 65 + 27 =
38 + 44 = 73 + 17 =
47 + 46 = 78 + 16 =
1. There are 13 toy dogs in the store, and 25 more toy dogs come in. How many are there now?
2. Xiaohong has 47 pieces of candy. After giving 24 pieces to her sister, how many pieces are left?
3. "Bear Bears" has already aired 37 episodes, and there are only 28 episodes left to air. How many episodes does "Bear Bears" have in total?
4. There are 49 people in a class, 22 boys, how many girls are there?
5. There are 46 peach trees and 38 apricot trees in the orchard. How many trees are there in total?
6. Mom spent a total of 76 yuan on pants and tops, of which 35 yuan was for pants. How much was the top?
Keywords: Dahaibian teaching courseware, Qingdao edition first-grade mathematics second volume PPT courseware download, first-grade mathematics slide courseware download, Dahaibian PPT courseware download, .PPT format;
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"Beachside" PPT courseware:
"Big Beach" PPT courseware teaching objectives: Master the vertical calculation method of adding two digits plus two digits (without carrying), and initially master the basic requirements and format of vertical calculations. Experience the process of exploring the calculation method of adding two digits to two digits within 100, and experience the diversity of algorithms..
File Info
Update Time: 2024-10-02
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