naw, I aint drawin no area diagarms
ok remember
(a/b)(c/d)=(ac)/(bd)
and
(a/b)/(c/d)=(a/b)(d/c)=(ad)/(bc)
invert and mulitply
11.
(4/5)(3/4)=12/20=6/10=3/5
12.
5/(1/3)=(5/1)/(1/3)=(5/1)(3/1)=15/1=15
13.
convert to improper
5 and 3/6=5 and 1/2=10/2 and 1/2=11/2
1 and 1/11=11/11 and 1/11=12/11
(11/2)(12/11)=(11*12)/(2*11)=132/22=12/2=6/1=6
14.
3 and 5/9=27/9 and 5/9=32/9
(32/9)(3/8)=(32*3)/(9*8)=96/72=4/3=1 and 1/3
15.
2 and 5/6=12/6 and 5/6=17/6
1 and 1/2=2/2 and 1/2=3/2
(17/6)(3/2)=51/12=17/4=4 and 1/4
16.
2 and 3/4=8/4 and 3/4=11/4
(24)/(11/4)=(24/1)/(11/4)= (24/1)(4/11)=96/11=8 and 8/11
17.
estimate
7 and 1/2 rounds to 8
5 and 4/5 rounds to 6
8*6=48
estimate is 48
18.
9 and 8/15 rounds to 10
10*11=110
19.
48 and 5/9 rounds to 49
7 and 1/8 rounds to 7
49/7=7
20.
50 and 3/7 rounds to 50
9 and 2/3 rounds to 10
50/10=5
11. 3/5
12. 15
13. 6
14. 1 and 1/3
15. 4 and 1/4
16. 8 and 8/11
17. 48
18. 110
19. 7
20. 5
