Fraction: A fraction represents a part of a whole. To find the fraction eaten, divide the number of slices eaten by the total number of slices.
- Find the total number of slices available
- Calculate how many slices were eaten
- Express as a fraction of the whole
- Simplify if possible
3 pizzas × 8 slices each = 24 total slices
4 friends × 6 slices each = 24 slices eaten
Fraction eaten = 24/24 = 1 whole pizza
Remaining = 24 - 24 = 0 slices = 0/24 of the total pizza
Friends ate 24/24 (1 whole) of the total pizza. 0/24 remains.
• Multiplication: To find total, multiply number of items by quantity per item
• Fraction of whole: Part eaten ÷ Total = Fraction eaten
• Subtraction: Remaining = Total - Eaten
• Whole number: Any number over itself equals 1 (24/24 = 1)
All slices eaten (24/24 = 1 whole), no slices remaining
Finding fraction of a number: To find 1/4 of 24 pieces, multiply 24 by 1/4 = (24 × 1) ÷ 4 = 6 pieces.
2 cakes × 12 pieces each = 24 total pieces
1/4 of 24 = (1 × 24) ÷ 4 = 24 ÷ 4 = 6 pieces
1/6 of 24 = (1 × 24) ÷ 6 = 24 ÷ 6 = 4 pieces
Neighbors = Total - Children - Mom = 24 - 6 - 4 = 14 pieces
Neighbor fraction = 14/24 = 7/12 of the total
Children got 6 pieces (1/4), mom kept 4 pieces (1/6), neighbors received 14 pieces (7/12).
• Fraction of a whole number: Multiply the whole number by the numerator, then divide by denominator
• Subtraction: To find remaining amount, subtract given amounts from total
• Equivalent fractions: 14/24 = 7/12 (divide by GCD of 2)
• Checking: 1/4 + 1/6 + 7/12 = 3/12 + 2/12 + 7/12 = 12/12 = 1
6 red pieces (1/4) to children, 4 yellow pieces (1/6) to mom, 14 green pieces (7/12) to neighbors
Finding multiple fractions of a number: Calculate each fraction separately, then subtract from the total to find the remaining amount.
1/6 of 36 = (1 × 36) ÷ 6 = 36 ÷ 6 = 6 cookies to teacher
1/4 of 36 = (1 × 36) ÷ 4 = 36 ÷ 4 = 9 cookies to friend
1/9 of 36 = (1 × 36) ÷ 9 = 36 ÷ 9 = 4 cookies to brother
Total given = 6 + 9 + 4 = 19 cookies
Remaining = 36 - 19 = 17 cookies
Remaining fraction = 17/36 of the total cookies
Teacher got 6 cookies (1/6), friend got 9 cookies (1/4), brother got 4 cookies (1/9). 17 cookies remained (17/36).
• Fraction of a whole number: Multiply the whole by numerator, divide by denominator
• Adding fractions: When denominators differ, calculate separately then add
• Subtraction: To find remaining amount, subtract given amounts from total
• Verification: Check that all parts add up to the whole (6+9+4+17 = 36)