The image contains three arithmetic problems, each presented in a column. The first problem appears to be 960 divided by 4, followed by a plus sign and 160. The second problem is 330 multiplied by 3, followed by an empty box. The third problem is 560 divided by 4, followed by 140, then a plus sign and 160. The image shows handwritten mathematical expressions on a grid paper background. There are also some empty boxes and dots which might indicate further operations or missing parts of the problems.

Analysis of the image:

The image displays three distinct mathematical problems presented vertically in columns. Each problem involves numbers and mathematical operators, possibly as part of a lesson or exercise.

• Column 1: Contains '960 : 4' followed by a '+' sign and '160:'. This suggests a division operation and then an addition operation with 160. However, the structure is incomplete as it doesn't show the result or the operation involving 160.
• Column 2: Shows '330 . 3 =' followed by an empty box. The dot symbol here likely represents multiplication, so the problem is 330 multiplied by 3. The empty box is likely where the answer should be written.
• Column 3: Displays '560 : 4 = 140 : + 160:'. This column seems to present a more complex sequence of operations. It starts with 560 divided by 4, which equals 140. Then there's a colon, a plus sign, and 160. The structure here is ambiguous and could represent chained operations or multiple separate problems.

The presence of grid paper suggests these are written exercises, likely from a notebook.