ezpain how 9 ×4 can help you find 9×8
well, 8 = 4x2, so ...
I am very confused on this problem:
2 x 2 x 2 + (14 - 4) divided by 2
do the parentheses first. Then you have
2x2x2 + 10/2
then the multiply/divide
8+5
then the add
13
To find the solution to 9 × 8, you can use the distributive property of multiplication.
First, write down the known multiplication fact: 9 × 4 = 36.
Now, think about the relationship between 8 and 4. They have a doubling relationship because 8 is twice as large as 4.
To apply this doubling relationship, you can double the known multiplication fact of 9 × 4 by adding another 9 × 4.
So take 36 and double it: 36 + 36 = 72.
Therefore, 9 × 8 = 72.
By understanding the relationship between numbers and using the distributive property, you can use the known fact of 9 × 4 to find the solution to 9 × 8.