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Best Answer
8 = 4*2
So 5*8 = 5*(4*2) which, by the associative property, = (5*4)*2
= 20*2
Can you do 20*2 more easily than 5*8?
If not, you need another round of associate property.
20 = 10*2
So 20*2 = (10*2)*2 = 10*(2*2) = 10*4
And if you cannot do 10*4 then this question is beyond you anyway and knowing 5*4 is not going to help.
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Related questions
What is 5X4 equals?
The answer is 20.
If you know that 4x5 equals 20 how can you use the commutative order property to find 5x4?
The Commutative Property (of Multiplication) says that 4x5 = 5x4. So, If 4x5 = 20, then 5x4 will also be 20.
What other then 5x4 equals 20?
1x20 2x10 4x5
What times what equals twenty?
2X10 would work, as would 5X4.
What property is 4x5 equals 5x4?
Associative property
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no. 6x8 =48. 5x4 + 1x4 =20 + 4 =24.
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How do you factor 5x4 plus 20x3plus 45x equals?
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