A bulletin board is 56 in wide and 36 in high. How many 3 1/2 in columns can be created?
She was telling you the equation to solve it 56 divided by 3.5 or 3/5
56 / 3.5 = ?
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To find out how many 3 1/2 inch columns can be created on a bulletin board that is 56 inches wide, we need to divide the width of the bulletin board by the width of each column.
The width of each column is 3 1/2 inches, which can be written as a mixed number or an improper fraction. If we convert it to an improper fraction, it becomes 7/2 inches.
Now, let's divide the width of the bulletin board (56 inches) by the width of each column (7/2 inches):
56 inches ÷ (7/2 inches)
To divide by a fraction, we can multiply by its reciprocal. In this case, the reciprocal of 7/2 is 2/7. So:
56 inches × (2/7)
To simplify this multiplication, we can cancel out common factors. The common factor here is 7:
(8 × 2) inches ÷ 1
16 inches
Therefore, you can create 16 columns of width 3 1/2 inches on a bulletin board that is 56 inches wide.