Half Of...
Quarter Of...
Third Of...
Adding Of
Subtracting
100

What is half of 60

30

100

what is a quarter of 20

5

100

what is a third of 30

10

100

2/6+2/6

4/6

100

8/10-1/10

7/10

200

what is half of 20

10

200

what is a quarter of 60

15

200

what is a third of 60

20

200

10/25+3/25

13/25

200

15/40-10/40

5/40

300

what is half of 50

25

300

what is a quarter of 100

 25

300

what is a third of 90

30

300

100/200+300/200

400/200

300

10/20-5/20

5/20

400

what is half of 70

35

400

what is a quarter of 200

50

400

what is a third of 120

40

400

8/10+1/10

9/10

400

15/30-8/30

7/30

500

what is half of 190

95

500

what is a quarter of 150

75

500

what is a third of 50

16.666666

500

15/40+10/40

25/40

500

25/50-6/50

19/50