21 is not abundant because 1+3+7=11 and 11 is less than 21. 50's factors are 1, 50, 2, 25, 5, 10. 1+2+25+5+10=48 so 50 also isn't abundant. 12 is abundant because 1+2+3+4+6=16 and 16 is bigger than 12. Zan
Great thinking George. I see you added 6 twice but you only need to include it once in the list of factors. Do you need to recheck your answer to see if 36 is an abundant number. Mr Janse
Number detective I think the answer is 64 because 64 has 2 digits, both 6 and 4 are even, 6 is greater than 4, 4 is not in the three times tables, 6 is not double 4, 6 + 4 = 10 which is in the 5 times tables
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21 is not abundant because 1+3+7=11 and 11 is less than 21. 50's factors are 1, 50, 2, 25, 5, 10. 1+2+25+5+10=48 so 50 also isn't abundant. 12 is abundant because 1+2+3+4+6=16 and 16 is bigger than 12.
ReplyDeleteZan
Abundant numbers
ReplyDelete36
6 and 6
4 and 9
1 and 36
2 and 18
3 and 12
So 36 is not an abundant number because if you add them all up it equals 31
By Ellie
Number detective
ReplyDeletethe number is 80
because the only mutiples of 5 is 120 and 80 and the only 2 digits number is clearly 80 because 120 has 3 digits.
ARCHIE
Abundant numbers
ReplyDeleteThe factors of 64:
1 and 64
2 and 32
3 and 16
4 and 8
6 and 4 1 + 2 + 3 + 4 + 6 + 32 + 16 + 8 + 4 = 66! Just!
Gemma
36
ReplyDelete1 and 36
2 and 18
12 and 3
4 and 9
1+2+12+4=19
So 36 is not an abandoned number.
George.b
36
ReplyDelete1 and 36
2 and 18
12 and 3
4 and 9
6 and 6
1+2+12+3+6+6=30
So 36 is not an abundant number.
George.b
Great thinking George. I see you added 6 twice but you only need to include it once in the list of factors. Do you need to recheck your answer to see if 36 is an abundant number. Mr Janse
Delete64
ReplyDelete1 and 64
2 and 32
4 and 16
8 and 8
1+2=3+4+8+16=28+32+64=124
So 64 is an abundant number
By Matthew M
number detectiv
ReplyDeleteI think the answer is 22 because it is times 1=2,they are both even,there 2 digits and the ones digit is not in the 3 times table.
Rosie
number detective
ReplyDelete86
donovan
They looked like good poplets, you must have spent a lot of time making them.
ReplyDeleteNumber detective
ReplyDeleteI think the answer is 64 because
64 has 2 digits,
both 6 and 4 are even,
6 is greater than 4,
4 is not in the three times tables,
6 is not double 4,
6 + 4 = 10 which is in the 5 times tables
Am I right Mr Janse?
Rebecca
Great thinking Rebecca. I think you did a great job in solving the problem.
DeleteMr Janse