Cutting Rules – A Simple Note for Children
What are the Gap Rules?
15 raw・4 = 3 remaining 3 (15 not split in 15)
Can be split
He learns the rules of numbers 1 to 20
Example 1
If the sum of the numbers is divisible by 3, it is divisible by 3.
Therefore, 123 can be divided into three. 123 cannot be divided into 32352 + 3 + 5 = 1010. _____.
End end is 0 or 5.
Example: edge. 5
90 ends with 0.
Ends with 6 (can be split into 2), 3+6 = 9 (differentiated by 3). 36 is excluded at 6, 3+0 = 3.
There is no rest.
Or use this trick (more than that):
Double the last number and subtract from the rest. 1414・7 =2
Therefore, 203 can be divisible by 7
Rule:
If the last three digits are divisible by 8, they can be divisible by 8. 3 digits = 016・8 =2
1.014
Last 3 digits = 01414・8 = 1 Reminder 6
Rule:
Numbers can be divided by 9. 567 5 + 6 + 7 = 18 ·
2 + 5 = 11 · 11 11 “is not divisible by 9 9 9 9 · 11 4 + 5 = 11 · 11 is not divisible through 9 9 9 9 9 9 9 95 = 11・11
Rule:
Take even numbers by odds and position and subtract the total.
If the result is 11 (or 0), the number is the 11th example:
Example:
969+6 = 15 (3 by 3), the last two digits 96・4 = 24
96 is 121+2+0 = 3. 20 (Quick Tips)
13 Rules:
You can’t try long divisions.
rule?
IST 246 Teilbar von 3?
Will 560 be divided from 4 and 5?
Can 1234 be divisible by 2 and 6?
Can 891 be divided from 9?
Are 132 of the 11 possible to divide?
