"Addition, Subtraction and Mixing" PPT courseware

Category	Format	Size
People's Education Press Second Grade Mathematics Volume 1	pptx	6 MB

"Addition, Subtraction and Mixing" PPT courseware

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Upload Time: 2024-11-21

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Description

"Addition, Subtraction and Mixing" PPT courseware

1. Fill in the blanks.

1. When doing addition and subtraction in writing, the same digits must be ( ),

Start by adding and subtracting from the ones digit.

If the two digits add up to ten, advance to the tens digit ( ). If a

If the number is not reduced enough, it will be moved back from the tens position ( ).

2. Vertical calculation.

36+28+17= 65-25-21＝

Consolidation exercises.

1. Use vertical calculation.

52＋29－38＝ 65－28＋17＝

The Stars Chorus originally had 52 members. Nine students have graduated and 15 new members have joined. How many members are there now?

Class summary:

In the vertical position, the same digits must be aligned, if there is not enough subtraction, they must step aside, and if the sum reaches ten, they must carry.

Keywords: Addition and subtraction within 100 courseware, continuous addition and subtraction and mixed addition and subtraction courseware, New People's Education Edition second grade mathematics PPT courseware, second grade mathematics slide courseware download, addition and subtraction within 100 PPT courseware download, Download PPT courseware for continuous addition, continuous subtraction and addition and subtraction, in .ppt format

For more information about the PPT courseware "Addition and subtraction within 100, continuous addition, continuous subtraction, and mixed addition and subtraction" PPT courseware, please click on the Addition and subtraction within 100 PPT, continuous addition, continuous subtraction, and mixed addition and subtraction PPT tags.

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 3):

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational Numbers and Their Operations PPT (Lesson 3) Part One Content: Learning Objectives 1. Master the skills of mixed operations of rational number addition and subtraction, and perform skilled operations. 2. Gain problem-solving skills through reflection on the process of solving simple practical problems.

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 2):

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational Numbers and Their Operations PPT (Lesson 2) Part One: Review of Old Knowledge The mixed operations of addition and subtraction of rational numbers can be calculated from left to right according to the order of operations, in which the operation between each two numbers According to the rules of addition or subtraction...

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 1):

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 1) Part 1: Review of old knowledge 1. What are the rules of addition and subtraction of rational numbers respectively? The addition rules of rational numbers: (1) When adding two numbers with the same sign, take the same sign and put...

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Update Time: 2024-11-21

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Addition and subtraction within 100 PPT Continuous addition, continuous subtraction and addition and subtraction mixed PPT

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"Addition, Subtraction and Mixing" PPT courseware