Show:
Addition
Subtraction
Multiplication
Basic fractions and decimals
Division
100

5+5

10

100

4-2

2

100

1/4+1/4

1/2

200

5+7

12

200

8-6

2

200

2.5+2.5

5

300

9+7

16

300

10-4

6

300

4.5+1

5.5

400

1/2+1/2

1

400

12-5

7

400

1/4+1/2

3/4

500

3/6+1/6

4/6

500

1-1/3

2/3

500

7x6

42

500

What is half of 1/2?

1/4

500

20รท5

4