Decomposing Fractions
Write an equation to show 6/10 as the sum of unit fractions.
3/10 + 3/10 = 6/10
4/10 + 2/10 = 6/10
5/10 + 1/10 = 6/10
Ellie, Nick, and Reese shared a box of Lucky Charms cereal. Ellie ate 2/8, Nick ate 4/8, and Reese ate 1/8 of the box. How much cereal did they eat all together?
7/8 of the box
2/8 + 4/8 = ?
6/8
4/5 - 1/5 = ?
3/5
Solve #13, Estimate the size of the angle to the right. Circle the best answer.
90 degrees
Decompose 7/18.
3/18 + 4/18 = 7/18
5/18 + 2/18 = 7/18
6/18 + 1/18 = 7/18
Mrs. Stickel and Mrs. Lange went for a walk. Mrs. Stickel drank 4/10 of a bottle of water, and Mrs. Lange drank 7/10 of her water bottle. How much more water did Mrs. Lange drink than Mrs. Stickel?
3/10 of a bottle of water
? = 5/11 + 7/11
12/11
? = 5/8 - 3/8
2/8
Solve #14, Estimate the size of the angle to the right. Circle the best answer.
0 - 90 degrees
Decompose 8/16
4/16 + 4/16 = 8/16
6/16 + 2/16 = 8/16
5/16 + 3/16 = 8/16
7/16 + 1/16 = 8/16
Lucy walked 3/6 of a mile. Dylan walked 5/6 of a mile. How much further did Dylan walk?
2/6 of a mile
3/10 + 40/100 = ?
(Hint: change the tenths to hundredths)
70/100
15/30 - 9/30 = ?
6/30
Solve #15, Estimate the size of the angle to the right. Circle the best answer.
90 - 180 degrees
Show two ways to decompose 9/19.
4/19 + 5/19 = 9/19
8/19 + 1/19 = 9/19
6/19 + 3/19 = 9/19
When drawing a picture, Olivia used 7/8 of the colors in her crayon box. Lucy used 4/8 of her crayon box. How many more colors did Olivia use?
3/8
7/10 + 50/100 = ?
120/100
3 4/6 - 1 2/6 = ?
2 2/6
Solve #16 Draw all the lines of symmetry for the shapes that are symmetrical.
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Show two ways to decompose 11/20.
10/20 + 1/20 = 11/20
9/20 + 2/20 = 11/20
8/20 + 3/20 = 11/20
7/20 + 4/20 = 11/20
6/20 + 5/20 = 11/20
Mrs. Mongada used 2 2/4 cups of flour to make cookies. Ms. Nicholas used 3 3/4 cups of flour to make cookies. How much flour did they use together?
5 1/4 cups
3 3/6 + 2 2/6 = ?
5 5/6
? = 6 9/10 - 4 6/10
2 3/10
Solve #17, Draw the other half to make a symmetrical shape.
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