Fill in the grid by counting in 2s with odd numbers. The first number is 1 and the fifth number is 9.

Here's how to fill in the grid by counting in 2s with odd numbers.

The instruction "Count in 2s with odd numbers" means that each number in the sequence must be an odd number, and each subsequent number is obtained by adding 2 to the previous one. The grid represents a continuous sequence.

Step 1: Fill in the first row.
We are given 1 in the first cell and 9 in the fifth cell.
Starting from 1, we add 2 repeatedly:
$1 + 2 = 3$
$3 + 2 = 5$
$5 + 2 = 7$
$7 + 2 = 9$ (This matches the given 9)
$9 + 2 =