Question

Fill in the blanks.
1. A number is divisible by ...
, if it ends in two zeros. or if the number formed
with its last two digits is visible by the same number
2. A number is divisible by
, if the sum of its digits is divisible by 3.
A number divisible by ... ........
-, has either a ( or an even number in its ones place
4. A number is divisible by
..., if it has a 0 or 5 in its ones place.
5. A number is divisible by
if it has a 0 in its ones place.
6. A number is divisible by ...,
..., if it ends in three zeros, or if the number formed
with its last three digits is divisible by the same number,
A number is divisible by
........, if it is divisible both by 2 and 3.
A number is divisible by ...
if the sum of its digits is divisible by
Class 6
Signature:
8​

Answer 1

Answer:

1. A number is divisible by 2, if it ends in two zeros. or if the number formed with its last two digits is visible by the same number

2. If that is divisible by 11, so is the original number. So, for instance, 2728 has alternating sum of digits 2-7+2-8 = -11. Since -11 is divisible by 11, so is 2728. Similarly, for 31415, the alternating sum of digits is 3-1+4-1+5 = 10.