angles/geometry
division
multiplication
subtraction
100

is a acute angle more or less then 90*

less

100

40~4

10

100

6 x 4

24

100

125-108

17

200

is a right angel 90* or 78*

90*

200

70~5

14

200

7 x 175

1225

200

1000-254

746

300

is a horizontal line 180* or 108*

108*

300

800~15

53.33

300

8 x 345

2760

300

132,906-7,185

125,721

400

is an obtuse thew SAM as a right angle

NO!

400

64~7

9.14

400

12 x 72

864

400

526,724-411,635

411,109

500

is a circle 360* or 306*

360*

500

800~60

13.33

500

13 x 456

5928

500

9,000,000-623,948

8376052