16.
just add them
make bottom numbers same tho
2/5 and 5/6
make them 30
2/5 times 6/6=12/30
5/6 times 5/5=25/30
add
2/5+5/6=12/30+25/30=37/30=30/30+7/30=1 and 7/30
answer is 1 and [tex] \frac{7}{30} [/tex]
17.
2 and 2/3+3 and 1/6=
2+2/3+3+1/6=
2+3+2/3+1/6
2/3 times 2/2=4/6
2+3+4/6+1/6=
5+5/6=
5 and [tex] \frac{5}{6} [/tex] hours
18.
7/8-3/4
3/4 times 2/2=6/8
7/8-6/8=1/8
answer is [tex] \frac{1}{8} [/tex] miles
19.
need-has=more need
3 and 1/8-2 and 7/8=
3+1/8-(2+7/8)=
3+1/8-2-7/8=
3-2+1/8-7/8=
1-6/8=
8/8-6/8=
2/8=
1/4
1/4 yd
20.
had-served=left
5 and 2/3-2 and 3/4=
5+2/3-(2+3/4)=
5+2/3-2-3/4=
5-2+2/3-3/4=
2/3 times 4/4=8/12, 3/4 times 3/3=9/12
5-2+8/12-9/12
3-1/12=
2+12/12-1/12=
2+11/12=
2 and 11/12
answer is 2 and [tex] \frac{11}{12} [/tex] gallons
16. 1 and [tex] \frac{7}{30} [/tex] pages
17. 5 and [tex] \frac{5}{6} [/tex] hours
18. [tex] \frac{1}{8} [/tex] miles
19. [tex] \frac{1}{4} [/tex] yd
20. 2 and [tex] \frac{11}{12} [/tex] gallons
