Creating an Array
Caroline has 10 marbles. On half of them are blue. How many of Caroline's marbles are blue?
5 marbles.
2/5 x 5 = ?
2
Solve. 1 1/3 x 2 1/2 = ?
3 1/3
1 2/3 x 4 2/5 = ?
110/15 = 22/3 = 7 1/3
Marco drew 20 pictures. He drew 3/4 of them in art class. How many pictures did Marco draw in art class?
15 pictures
5/12 x 6 = ?
5/2 or 2 1/2
1 3/8 x 2 1/2 = ?
3 7/16
5 1/2 x 3 1/3
55/3 = 18 1/3
Max's stamp collection has stamps from different countries. He has 12 stamps from Canada. Of those 12, 2/3 of them have pictures of Queen Elizabeth the II. How many stamps have the queen on them?
8 stamps have Queen Elizabeth the II.
3/4 x 1/6 = ?
3/24 or 1/8
Let each square represent 1/4 foot by 1/4 foot. 1 3/4 x 1 2/4 = ?
2 5/8
4 2/5 x 10 = ?
44
Draw an array. Susana has 16 stamps. In her collection, 2/3 of the stamps are from the US. How many of her stamps are from the US and how many are not?
x x x x
x x x x
x x x x
x x x x
12 Stamps are from the US, 4 are not.
Nora has a piece of ribbon that is 3/4 yard long. She will use 1/2 of it to make a bow. What length of the ribbon will she use for the bow?
3/8 yard.
Let each square represent 1/4 foot by 1/4 foot. 1 & 1/4 x 1 & 1/2 = ?
1 & 7/8
Jake can carry 6 1/4 pounds of wood in from the barn. his father can carry 1 5/7 times as much as Jake. How many pounds can Jake's father carry?
10 5/7 pounds.
Draw an array. First, find 2/3 of 12. Then, find 4/6 of 12. Explain why the answer is the same as the answer you found when 2/3 of 12.
Since 2/3 and 3/4 are equivalent fractions, the same number of counters are circled when I circle 4 out of 6 groups as when I circle 2 out of 3 groups.
Ricardo's recipe for 4 loaves of bread requires 2/3 cup of olive oil. He only wants to make one loaf. Ricardo makes a model to find out how much oil he needs to use. He folds a paper into three parts and shades two parts. Then he folds the paper into four parts and he shades 1/4 of the shaded part. Ricardo decides he needs 1/4 cup of olive oil. Is he right? Explain.
No. He used the number of parts he shaded, 8, as the denominator instead of the total number of parts. Ricardo needs 2/12 or 1/6 cup of olive oil.
Solve. 1 & 1/9 x 1 & 2/3 = ?
1 & 23/27
A glass can hold 3 1/3 cups of water. A bowl can hold 2 3/5 times the amount in the glass. How many cups can a bowl hold?
8 2/3