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 Second Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Beijing Normal University Edition Eighth Grade Mathematics Volume 1
People's Education High School Mathematics Edition B Compulsory Course 2
Hebei Education Edition Seventh Grade Mathematics Volume 2
Hebei Education Edition Fourth Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
People's Education Press First Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Western Normal University Edition First Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Subtract How Many from 14" Subtraction within 20 PPT courseware
practice
11-3= 6+8=
12-7= 5+9=
13-4= 9+5=
13-8= 7+7=
12-4= 8+6=
teaching objectives
1. Master the calculation method of subtracting the number from 14, and be able to calculate the subtracted number from 14 orally.
2. Experience the process of exploring the calculation method of subtracting a few from 14, and feel the universal usability of abdicated subtraction calculation.
Countdown method: 13, 12, 11, 10, 9, 8, (counting back 6) there are 8 people left
Divide 14 into 4 and 10, 10-6=4, 4+4=8.
Divide the subtrahend into 4 and 2, subtract 4 first, then 2, 14-4-2=8.
Think of addition and subtraction. Because 6+8=14, so 14-6=8.
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For more information about the PPT courseware "Subtracting the number from 14 to 14 with abdicated subtraction within 20" PPT courseware, please click the PPT tag of subtracting the number from 14 to 14 with abdicated subtraction within 20.
"Subtracting a few from 13 and 14" PPT courseware for subtraction within 20:
"Subtracting the number from 13 and 14" PPT courseware on subtraction within 20. Teaching objectives: 1. Combined with the problem situation, experience the calculation process of subtracting the number from 13 independently. 2. Be able to correctly calculate the subtraction of 13 and 14 using the method of subtracting ten or adding and subtracting. 3. Think proactively and proactively with...
File Info
Update Time: 2024-10-19
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