Odd and even
Multiply
Division
Add and Subtract
100

11 is odd or even

Even

100

12×9

108

100

9÷1

9

100

101+101

202

200

900 is odd or even

Odd

200

9×9

81

200

90÷9

10

200

100+100

200

300

1,010 is odd or even

Odd

300

20×1

20

300

81÷9

9

300

337 + 522

859

400

1 is even or odd

Even

400

9×6

54

400

1÷1

1

400

111+111

222

500

444,199 is odd or even 

Even 

500

999×0

0

500

30÷5

6

500

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Ok