Fractions Flashcards
Christopher had a bottle of orange juice. He gave some juice to his best friend. He then gave half of the remaining juice to his neighbor. He was left with 1/4 of the bottle of orange juice.
What fraction of the bottle of orange juice did Christopher give to his best friend?
A) The remaining amount is 3/4 of the bottle.
The amount of what N received was 1/2 of what F received. Together they had 2/2 + 1/2 = 3/2
F received 2/3 of 3/4 which is 1/2.
B) Since 1/4 of the bottle of orange juice was left, the
amount of juice Christopher gave to his neighbor was
also 1/4** (Why?).**
1 – 1/4 – 1/4 = 2/4
Christopher gave his best friend 2/4 or 1/2 of the bottle of orange juice.
What fraction of $1 is 90c?
9/10
40 out of 44 students have passed the exam
The # of boys is 4/7. There’re 18 more boys than girls. What is the total number of students?
Number of boys = number of girls +18.
7/7 is the total number fo students.
Why does 18 equal to 1/7?
3/7 of apples are red apples. The rest are green apples. There are 24 green apples. How many apples are there altogether?
1) 3/7 is red apples; 4/7 is green apples.
2) 24/4=6. By dividing 24 green apples by 4 we get a number that is 1/7 of the total amoun of apples.
2) 6*7=42
