Show:
add
subtract
adding & subtracting negatives
multiplying
multiplying & dividing negatives
100

10+10

20
100

17-13

4

100

-19+27

8

100

12 x 12

144

100

-12 x 6 

-72

200

24+13

37

200

85-64

21

200

78+(-99)

-21

200

24 x 9

216

200

56/-8

-7

300

54+69

123

300

121-64

57

300

89+(-50)

39

300

144 x 98

14,112

300

78 x (-59)

-4602

400

124+86

210

400

395-125

270

400

-589-(-24)

-565

400

780 x 960

748,800

400

1,068/-89

-12

500

1,264+72

1,336

500

5,027-695

4,332

500

10,285-(-1,075)

11,360

500

1,529 x 14

21,406

500

8835/-15

-589