What's In In the previous modules, you have learned the divisibility rules for 2, 3, 5, 6, 9 and 10. Recall what you have learned by doing the exercise below: Directions: See if the numbers in the first column are divisible by 2, 3, 5, 6, 9 or 10. Mark X on the corresponding columns. Copy the table with your answers on a separate sheet of paper. 5 6 9 Divisible by 120 125 180 324 660
Answers
Answer:
What's In In the previous modules, you have learned the divisibility rules for 2, 3, 5, 6, 9 and 10. Recall what you have learned by doing the exercise below: Directions: See if the numbers in the first column are divisible by 2, 3, 5, 6, 9 or 10. Mark X on the corresponding columns. Copy the table with your answers on a separate sheet of paper. 5 6 9 Divisible by 120 125 180
Answer:
Step-by-step explanation:
The no. is divisible by 5 if the unit's digit is 0 or 5
120= unit's digit is 0 so it is divisible by 5
125 = unit's digit is 5 , so it is divisible by 5
180 = unit's digit is 0 so it is divisible by 5
324 = unit's digit is 4 so it is not divisible by 5
660 = unit's digit is 0 so it is divisible by 5
The no. is divisible by 6 if it is divisible by both2 and 3 .
And we know that even no's are divisible by 2.And the no. is divisible by 3 if sum of the digit is a multiple of 3
120 ,180 ,324 ,660 are even no's so they are divisible by 2.
120 = 1+2+0= 3 ,3 is a multiple of 3 so 120 is divisible by 6 as it is divisible by both 2 and 3
125 is not divisible by 6 as it is not divisible by 2
180 = 1+8+0=9 , 9 is divisible by 3 so 180 is divisible by 6 as it is divisible by both 2 and 3
324= 3 +2+4=9 ,9 is divisible by 3 so 324 is divisible by 6
660=6+6+0=12,12 is divisible by 3 so 660 is divisible by 6 as it is divisible by both 2 and 3
A no. is divisible by 9 if sum of the digits is divisible by 9
120 =1+2+0 =3 ,3is not divisible by 9 so 120 is not divisible by 9
125 =1+2+5=8 ,8 is not divisible by 9 so 125 is not divisible by 9
180 =1+8+0=9, 9 is divisible by 9 so 180 is divisible by 9
324 =3+2+4=9,9 is divisible by 9 so 324 is divisible by 9
660= 6+6+0=12,12 is not divisible by 9 so 660 is not divisible by 9