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To make 243 divisible by 10, we need to find the nearest multiple of 10. The nearest multiple of 10 less than 243 is 240. To make 243 divisible by 10, we need to add 240 + 3, which equals 243. Therefore, we need to add 3 to 243 to make it divisible by 10.
Well, honey, if you want to make 243 divisible by 10, you need to add 7 to it. Why 7, you ask? Because 243 + 7 = 250, and 250 is divisible by 10. So, go ahead and sprinkle that 7 on top like the cherry on a sundae.
To find out if 640 is divisible by 3, we will add up the numbers that make 640 as follows: 6 + 4 + 0 = 10 We know that if the sum of the numbers that make up 640 is divisible by 3, then 640 is divisible by 3. Since 10 is NOT divisible by 3, 640 is also NOT divisible by 3. Thus, the answer to the question "Is 640 divisible by 3?" is NO. If you divide 640 by 3, you get 213.3333333.
the rule for divisibility by 9 is that the sum of all digits of the number should should be divisible by 9. So, 3+9+0+6+5= 23. To make is divisible by 9, we think of 27 (as the next number divisible by 9) and that means if we add 4 to any digit of the number, it will be divisible. 39069/9=4341
If its digital sum add up to 9 then it is divisible by 9