7 1/2 - 6 3/10
A. 13 4/5
B. 1 1/4
C. 1 1/5
D. 1 1/10
2 answers
Its B. 1 1/4
1 / 2 = 5 • 1 / 5 • 2 = 5 / 10
7 1 / 2 = 7 + 1 / 2 = 7 + 5 / 10
6 3/10 = 6 + 3 / 10
7 1/2 - 6 3/10 =
7 + 5 / 10 - ( 6 + 3 / 10 ) =
7 + 5 / 10 - 6 - 3 / 10 =
7 - 6 + 5 / 10 - 3 / 10 =
1 + 2 / 10 = 1 + 2 • 1 / 2 • 5 =
1 + 1 / 5 = 1 1/5
Answer C
7 1 / 2 = 7 + 1 / 2 = 7 + 5 / 10
6 3/10 = 6 + 3 / 10
7 1/2 - 6 3/10 =
7 + 5 / 10 - ( 6 + 3 / 10 ) =
7 + 5 / 10 - 6 - 3 / 10 =
7 - 6 + 5 / 10 - 3 / 10 =
1 + 2 / 10 = 1 + 2 • 1 / 2 • 5 =
1 + 1 / 5 = 1 1/5
Answer C