How to know and distinguish ๐จ instantโจ
Knowing for a moment โ๏ธ
There is a way to tell multiples of 3 in an instant.
It can be used in various situations from elementary school students to high school students, such as the fraction of the deal, so save and check ๐ก
โ How to distinguish multiples of 3
If the number of each digit is added to a multiple of 3, the original number will also be a multiple of 3.
For example
216 is a multiple of 3 since 2 + 1 + 6 = 9
243 is a multiple of 3 since 2 + 4 + 3 = 9
Both are multiples of three, so
216 / 243 is about 3 minutes,
72 / 81.
If you come this far, you can see that it is a multiple of 9, so if you divide it by 9 further
"8 / 9" is about to end โ
At first, I didn't know if I could do it.
Just tell if it's a multiple of three
You can continue to work until the end in order โจ
there are many other ways to tell multiples
Let me know in the comments what you know ๐ฌ
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Former elementary school teacher ๐ซ โ Professional tutor โ๏ธ
โ Have fun learning math Post from here
ใฏใพใกใใๅ ็๏ฝๅญฆใณใๆฅฝใใ
Tutoring to love learning โจ
โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ โ
# math The study method Junior High School Exam # parenting # math
ใ็ดๅใงใใใใฉใใใใใใใจๅคๆญใงใใใใใซใชใใจใ่จ็ฎใฎในใใผใใไธๆฐใซไธใใใพใใ็งใๆๅใฏใๅๆฐใ่ฆใใใณใซ็ญ็ฎใฟใใใซๅฒใฃใฆ็ขบใใใฆใใฆๆ้ใใใใฃใฆใใพใใใใงใโ3ใฎๅๆฐใไธ็ฌใง่ฆๅใใๆนๆณ๏ผๅไฝใฎๆฐใ่ถณใ๏ผโใ่ฆใใฆใใใ็ดๅใฎๅฝใใใไปใใใใใใใซใชใฃใฆๆฅฝใซใชใใพใใใ ใพใใ3ใง็ดๅใงใใใ็ขบ่ชใใใใจใใฏใๅๅญใปๅๆฏใใใใใฎๅไฝใฎๆฐๅญใ่ถณใใฆ3ใฎๅๆฐใใใ่ฆใพใใใใจใใฐ 243 ใชใ 2+4+3=9ใ9ใฏ3ใฎๅๆฐใชใฎใง243ใ3ใฎๅๆฐใใใใใฃใฆๅๆฏใ3ใฎๅๆฐใชใใๅๅญใๅใใใใซ็ขบ่ชใใฆใไธกๆนใ3ใฎๅๆฐใฎใจใใ ใโ3ใง็ดๅใงใใโใจๅคๆญใใพใใ ใใใงไพฟๅฉใชใฎใใใใจใใใใ3ใงๅฒใใใใใๆๅใซ่ฆใๆ้ ใงใใๅๆฐใฎ็ดๅใฏใใใใชใๆๅคงๅ ฌ็ดๆฐใๆขใใใใใพใๅฐใใ็ด ๆฐ๏ผ2โ3โ5โฆ๏ผใงๅฒใใใใ้ ็ชใซใใงใใฏใใใจๆฉใใงใใ ใป2ใงๅฒใใ๏ผ๏ผๆซๅฐพใ0,2,4,6,8ใชใOK๏ผๅถๆฐ๏ผ ใป3ใงๅฒใใ๏ผ๏ผๅไฝใฎๆฐใ่ถณใใฆ3ใฎๅๆฐใชใOK ใป5ใงๅฒใใ๏ผ๏ผๆซๅฐพใ0ใ5ใชใOK ใใฎใๆ้ ใใๅบๅฎใใใจ่ฟทใใๆธใใพใใ็งใฎใใใใใฏใ่ฆใ็ฎใงๅคๆญใใใใ2ใจ5ใๅ ใซ่ฆใฆใใใฎๆฌกใซ3ใใใงใใฏใใๆตใใ็นใซไธญๅญฆๅ้จใๅฎๆใในใใ ใจใๆ้ใจใฎๅ่ฒ ใชใฎใงโๅณๅคๆญโใๅนใใพใใ ไพใฎ216/243ใใ216ใฏ2+1+6=9ใ243ใ2+4+3=9ใงใใฉใกใใ3ใฎๅๆฐโใพใ3ใง็ดๅใงใใพใใใใใซ72/81ใซใชใฃใฆใใ72ใฏ7+2=9ใ81ใฏ8+1=9ใงใพใ3ใฎๅๆฐใใใใใฆใใพใ ใใใใใๅคๆญใใชใใใๆๅพใพใง็ดๅใ้ฒใใใใพใใ ๆๅพใซใณใใ1ใคใๅไฝใฎๅ่จใๅคงใใใชใฃใใใๅ่จใใใใซๅไฝใ่ถณใใฆๅฐใใใใฆOKใงใ๏ผไพ๏ผ27โ2+7=9๏ผใใใฎโ่ถณใใฆ็ขบ่ชโใ็นฐใ่ฟใใ ใใงใ3ๅ๏ผ3ใฎๅๆฐ๏ผใใฉใใใฎๅคๅฎใใใชใ้ใใชใใพใใ
