You can only do multiplation so a whole number is divisble by another whole number when the quotient is a whole number and the remainder is 0
3
9
0 remainder
Think of the chairs as arrays. The dimensions of the arrays give you the factors of 18.
Assuming you want a rectangular array, 1 x 18, 2 x 9, or 3 x 6.
You can see that multiplication works both ways: 2x9=18 9x2=18 5x9=45 9x5=45 Arrays are also helpful in seeing the inverse relationship between multiplication and division.
450 dollars
12 dozen = 18 so 4 dozen = 4/12 * 18 = 6
Think of the chairs as arrays. The dimensions of the arrays give you the factors of 18.
Assuming you want a rectangular array, 1 x 18, 2 x 9, or 3 x 6.
9,9
Buttons Briggs died February 18, 1911, in Cleveland, OH, USA.
You can see that multiplication works both ways: 2x9=18 9x2=18 5x9=45 9x5=45 Arrays are also helpful in seeing the inverse relationship between multiplication and division.
The multiplication fact (singular, not plural 'facts') that can be found is 7x9 = 63. Using the arrays, a 2x9 array (2 rows of 9 items) and 5x9 array (5 rows of 9 items) is 63: 2x9 = 18 5x9 = 45 18 + 45 = 63
You, can't.
450 dollars
18
12 dozen = 18 so 4 dozen = 4/12 * 18 = 6
18 Chairs into equal rows - 6 x 3 2 x 9 18 x 1
It's a concrete way to visualize an abstract concept. If you can arrange the chairs (or blocks or stones or any other items) in even rows, those dimensions are factors. You will find you will be able to arrange them in 2 rows of 9 and 3 rows of 6. You will not be able to arrange them in rows of 4 or 5 without having some left over. The factors of 18 are 1, 2, 3, 6, 9 and 18.