1) 1/2 2) 7/8 3) 4 4) 19/8 = 2 3/8

1) Answer:  ½. _____________________ Explanation: _____________________  3/4 − 1/4 = 2/4 = 1/2 ; or, ½ . ________________________________________________ 2) Answer: ⅝ . ________________________ Explanation: ______________   1/2 + 1/8 = (1*4)/(2*4) + 1/8 = 4/8 + 1/8 = 5/8 ; or, ⅝ . ________________________________________________ 3) Answer: 4 . ____________ Explanation: ______________ 6 ½ − 2 ½ = 4 .  (or; 6.5 − 2.5 = 4.0 = 4 .). _______________________________________________ 4) Answer: 2 ⅜ . _________________ Explanation: _________________ 3 1/2 − 1 1/8  = ?       _______________           → 1/2 = (1*4)/(2*4) = 4/8; → So rewrite: "3 1/2" as: "3 4/8"; and rewrite the problem: ___________________________________________           →  3 4/8 − 1 1/8  = 2 3/8 ; or, 2 ⅜ . ___________________________________________