Rational Numbers

Multiplication

100

3*3*3*3

81

200

12*12*2

288

300

67*73*2

9782

400

144*144*01.0

20736

500

Abraham Lincoln * George Washington * Franklin D. Roosevelt

Hint: There Presidential number 

512

Division

100

(1468/2)2

1468

200

[(1100/2)*5] / 2

1375

300

[(1100/2) *5] /2

1375

400

8560/ 4 * 7 / 5

2996

500

909/ .75 / 8

151.5

Adding

100

.50 + 25% + .75

150%

200

200 + .32 + - 3.1458

197.1742

300

51 + -23 + -23 + 3.14

8.14

400

12/20 + 3.28 + 20/12

5.546666666666666

500

George Washington + Barack Obama + Donald Trump + Abraham Lincoln

Hint: There Presidential number 

106

Subtracting

100

56-76-19*4

-96

200

321-389-423*1

-491

300

99- 199- 189* 2

-478

400

25.56754-12.25739

 13.31015

500

-798-567-111-2390 * 2

-6256