Brøk gange Brøk

Runde tal

100

10/10 · 10/10=?

100/100 / ½

200

50/200·10/10=?

500/2000

300

20/20· 90·180=?

1800/3600

400

60/90·20/100=?

1200/9000

500

600/800·100/300=?

60,000/240,000

Høje tal

100

1,000/2,000·400/1,000=?

 400,000/1,000,000

200

5,000/10,000·200/100=?

100,000/ 1,000,000

300

2,000/2,000·5/10=?

10000/20000

400

80,000/100,000·100/200=?

16,000,000/20,000,000

500

1,000,000/1,000,000·700/3,675=?

700,000,000/3,675,000,000

Lave tal

100

1/2·1/2=?

1/4

200

 2/5·3/6=?

6/30

300

6/9·7/10=?

42/90

400

8/9·10/17=?

80/153

500

15/22·12/27=?

 180/594

Ulige tal

100

1/3·5/7=?

5/21

200

7/9·9/9=?

63/81

300

9/11·9/13=?

81/130

400

13/15·13/15=?

 169/225

500

3/7·25/53=?

75/371

Random tal

100

17/18·10/10=?

170/180

200

49/85·3/10=?

147/850

300

200/700·40/100=?

8000/70000

400

17/18·50/50=?

850/900

500

1/1 · 1/1=?

1/1