Yolozombie101
Yolozombie101
06-01-2016
Mathematics
contestada
What number adds 10 and multiplies 21
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CreativityBrain
CreativityBrain
06-01-2016
7 and 3. 7+3=10 and 7x3=21
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taskmasters
taskmasters
06-01-2016
The numbers are 7 and 3.
7 + 3 = 10
7 x 3 = 21
It is easier to factor 21 than to find the addends of 10.
1, 3, 7, 21 - are factors of 21
1, 2, 3, 4, 5, 6, 7, 8, 9 - are addends of 10. Which is more numbers to consider than the factors of 21.
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