When we are partitioning in division, we are dividing the number into its place values, and then applying the divisor to each of the values.
For example in the first problem, we have 642, which is also 600 + 40 + 2.
That means we'll have three division problems.
600 ÷ 2 = 300
40 ÷ 2 = 20
2 ÷ 2 = 1
Which means that 642 ÷ 2 = 300 + 20 + 1, or 321.
You can apply this format to the other two problems to find their answers.
If you do, you should get that 969 ÷ 3 = 323, and 844 ÷ 4 = 211.
Hope this helps!
