1. Adding and subtracting fractions
= 8/ /20 = 23/20 = 1 3/20
2/5 + 3/4
7/8 + 5/6
5/12 - 1/4
4) 1 1/2 - 3/4
5) 4 1/6 – 3 2/3
6) 3 2/ /4
7) 10 1/12 – 8 5/6
Extension:
8) 3 1/2 – 4 1/ /4
9) 2 4/9 – 1 2/3 + 5/6
= 21/ /24 = 41/24 = 1 17/24
= 5/12 – 3/12 = 2/12 = 1/6
= 3/2 – 3/4 = 6/4 - 3/4 = 3/4
= 25/6 – 11/3 = 25/6 – 22/6 = 3/6 = 1/2
=17/5 + 5/4 =68/20+25/20=93/20 =4 13/20
= 121/12 – 53/6 = 121/12 – 106/ = 15/12 = 5/4 = 1 1/4
= 7/2 – 17/4 +11/4 = 14/4 – 6/4 = 8/4 = 2
= 22/9 – 5/3 + 5/6 = 44/18 – 30/ /18 = 29/18 = 1 11/18