Most mathematics courses are designed to ease the student from concrete to abstract thought. If you can visualize chairs in rows, then you can think of those groupings of chairs as rectangles, then you can think of the numbers associated with them by themselves. You can arrange 18 chairs in one row of 18, two rows of 9 and three rows of 6. Those are the factor pairs of 18.
240
The number 225/15 means 225 divided by 15. The answer is 15.
225
15
8
1 row of 100 chairs. 2 rows of 50 chairs. 4 rows of 25 chairs. 5 rows of 20 chairs. 10 rows of 10 chairs. 20 rows of 5 chairs. 25 rows of 4 chairs. 50 rows of 2 chairs. 100 rows of 1 chair. Or you could put them all in one big circle.
one row of 18 chairs two rows of 9 chairs three rows of 6 chairs
450 Chairs total.15 rows of 20 chairs already set up15 * 20 = chairs already set up300 chairs already set upChairs remaining = 450 -300 = 150 chairs still need to be set up.
3.5
84 of them.
180 less than the total number that attend the event.
65 / 5 = 13 rows
They were not chairs but rows of stone.
The number of rows and the number of chars in that row give you the factor pairs of 18. If you list the number of rows when the 18 chairs can be arranged in rows with an equal number in each row, then this list is the factors of 18. 18 chairs can only be arranged in: 1 row of 18 chairs (1 × 18 = 18) 2 rows of 9 chairs (2 × 9 = 18) 3 rows of 6 chairs (3 × 6 = 18) 6 rows of 3 chairs (6 × 3 = 18) 9 rows of 2 chairs (9 × 2 = 18) 18 rows of 1 chair (18 × 1 = 18) The factors of 18 are thus: 1, 2, 3, 6, 9, 18.
Most mathematics courses are designed to ease the student from concrete to abstract thought. If you can visualize chairs in rows, then you can think of those groupings of chairs as rectangles, then you can think of the numbers associated with them by themselves. You can arrange 18 chairs in one row of 18, two rows of 9 and three rows of 6. Those are the factor pairs of 18.
Yes, with 9 chairs in each row.