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Question
The sum of two consecutive odd numbers is divisible by 4. Verify this statement with the help of some examples.
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Solution
The sum of two consecutive odd numbers is divisible by 4.
For example : 3 + 5 = 8 and 8 is divisible by 4.
3 + 5 = 8, which is divisible by 4
15 + 17 = 32, which is divisible by 4
19 + 21 = 40, which is divisible by 4.
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Monto cat is waiting for somebody. Do you know for whom he is waiting? There is a trick to find out.
- Mark with a red dot all the numbers which can be divided by 2.
- Mark a yellow dot on the numbers which can be divided by 3 and a blue dot on the numbers which can be divided by 4.
- Which are the boxes which have dots of all three colours?
- What are the letters on top of those boxes?
- Write those letters below in order.
Using the divisibility test, determine which of the following number is divisible by 4; by 8:
572
Using the divisibility test, determine which of the following number is divisible by 4; by 8:
726352
Using the divisibility test, determine which of the following number is divisible by 4; by 8:
12159
Using the divisibility test, determine which of the following number is divisible by 4; by 8:
21084
Using the divisibility test, determine which of the following number is divisible by 4; by 8:
1700
How many digits of a number need to be checked to determine if it is divisible by 4?
Which pair of numbers both satisfy the divisibility rule for 4?
