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Q: How do you know that 4x5 equals 20 is correct?

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The Commutative Property (of Multiplication) says that 4x5 = 5x4. So, If 4x5 = 20, then 5x4 will also be 20.

the product of 4x5=20 is 2

20-4X5=0 so to make it zero it should be multiplied by 0 hence B=0

1x20 2x10 4x5

POGGERS 20

4x5 = 20

Four multiples of five equals twenty: 4x5=20.

20 quarts. There are 4 quarts in a gallon, so 4x5=20.

9

20

20 5x4 and 4x5

20, 10x2 and 4x5

20x1; 10x2; 4x5

That's what the communtitive property is, changing the order. like 4+5=9; 5+4=9. So 4x5=20 and 5x4=20.

1 5th of 20 is 4 4x5=20

20x1; 10x2; 4x5

20 =4x5 24= 4x6gcf = 4

No, it is not. 4x4=16; 5x5=25 20=4x5

There are 20 because 4*5 = 20

4+5-4x5 First you do 4x5=20 Then 4+5=9 So you have 9-20=-11 Your answer is -11

no 0.5 =1/2

1x20 2x10 4x5

Let's say the question was 4x5. The answer is 20. If a division question 20 divided by 5, you know its 4 from the multiplication question.

There are infinitely many possible answers:1 * 20 0.1 * 200 0.001 * 2000 and so on. or 2*10 0.2 * 100 0.02 * 1000

10x2 4x5 20x1 1x20 5x4 2x10