CHANGES IN MATTER
During the fall, a big pile of dry leaves had collected in the school’s yard. The following spring, the pile of leaves is small, wet, and slimy, and the leaves are all stuck together. Which change best explains what happened to the leaves?
decay
Keenan went into his living room and turned on the television. Which type of energy must be changed into other forms of energy to make the television function?
heat energy
light energy
sound energy
electrical energy
electrical energy
decompose 8/9 into two fractions
4/9 + 4/9
answers vary
What is the missing piece?
33/12 - ? = 17/12
16/12
Hannah has 3 baseballs. Each weighs 5/16 of a pound. How much do they weigh together.
15/16
Dalton wants to compare the way direct sunlight affects the temperatures of three different liquids. He measured the temperature of each liquid in degrees celcius (°C) before and after it was placed in the sun. His results are shown in the table below.
LiquidStarting
Temperature
Temperature after 2 minutes
Water20oC20oC
Oil20oC20oC
Soft Drink20oC20oC
How can Dalton best improve this activity?
Dalton can use one liquid as a control.
Dalton can increase the length of time.
Dalton can start at a higher temperature.
Dalton can increase the number of liquids.
Dalton can increase the length of time.
Decompose 9/5 into two fractions
3/5 + 6/5
answers vary
3 1/6 - 1 5/6
1 2/6 or 1 1/3
Lorelei is making cookies. 4 batches of chocolate chip cookies that need 2/3 c sugar. She is also making 4 batches of vanilla cookies need 1/3 c sugar. How many cups of sugar does she need?
4 cups
A teacher asked Stephanie and Rachael to measure 25 milliliters (mL) of water. Stephanie measured water using a 50-mL graduated cylinder and Rachael used a 50-mL beaker. The students measured the mass of the water in their containers. Stephanie’s water had a mass of 25 grams and Rachael’s volume of water had a mass of 28 grams.
Which statement best explains why the students' mass measurements were different?
Stephanie used an item that provided a more accurate measurement of volume.
The item used by each student was made from a different material.
The water used by each student was a different temperature.
Rachael used water from a different source.
Stephanie used an item that provided a more accurate measurement of volume.
Usually Ms. Nagel runs 10 miles per day. But because of the rain, she only completed 4/5 of her normal run. How far did she run before it started raining?
8 miles
Decompose 2 3/5
5/5 + 5/5 + 3/5
5/8 + 3/8 + 4/8 (answer as a mixed number (ie 1 1/2)
1 4/8
Angela needs 3/4 foot of ribbon to make one bow. How much does she need to make 3 bows? (answer as a mixed number)
2 1/4 (9/4)
An apple was cut into four pieces. Which statement below is true about the Law of Conservation and this apple?
The mass of the cut apple is 1/2 of its original mass.
The mass of the cut apple is 1/4 of its original mass.
The mass of the cut apple is the same as its original mass.
The mass of the cut apple is greater than its original mass.
The mass of the cut apple is the same as its original mass.
Ms. K wants to give out cheez-its. She has 5 boxes with 3/4 each. How much does she have?
15/4 or 3 3/4
Decompose 14/8
6/8 + 8/8
answers vary
25/12 - 9/12 = ?
(Answer as a mixed number)
1 4/12
Nolan bikes 10/12 of a mile each day. How many miles will he bike after 7 days?
70/12 or 5 10/12
Kyle holds a piece of sandpaper. He says that the sandpaper reminds him of the sidewalk near his school. Which property of the sandpaper and the sidewalk is he comparing?
C. Texture
Ms. Izarry is making bags of candy. She uses 3/4 airhead per class. For 7 classes how many bags does she need?
21/4 or 5 1/4
decompose 11/5
5/5 + 6/5
answers vary
7 1/4 - 5 2/4
1 3/4
Katya is baking cookies. The recipe makes 12 cookies. She only wants to make 2/3 as many cookies as the recipes calls for. How many cookies should she make?
8