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Round to the nearest 10 and 100 (3.NBT.1)

### Extreme Ironing

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**Answers**:

1. 60 feet

2. 20 feet

3. The first team’s height at 58 feet

4. 400 feet.

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Estimate sums and differences within 1,000 (3.NBT.1)

### When Humans Take Flight

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**Answers**:

1. About 250 feet farther

2. About 820 feet

3. About 70 seconds longer

4. About 700 feet higher

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Add and subtract within 1,000 (3.NBT.2)

### Tug of War

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**Answers**:

1. 192 feet

2. 475 **yuckyfood1s**

3. 261 feet

4. 273 feet

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Multiply single digits (3.OA.3)

### The School Play

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**Answers**:

1. 18 moos

2. 28 cups of **yuckyfood3**

3. 27 lines of song

4. 30 minutes, since there are 6 songs total

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Divide within 100 (3.OA.3)

### Crazy Cupcake Contest

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**Answers**:

1. 9 cupcakes each

2. 6 rows

3. 18 cupcakes

4. 24 cupcakes each

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Identify and create fractions (3.NF.1)

### Secret Ice Cream Dream

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**Answers**:

1. 1/3 each

2. 4 parts, each 1/4

3. 4/6 or 2/3

4. 1/3

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Compare and find equivalent fractions (3.NF.3d)

### Costume Contest

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**Answers**:

1. **Student4** has more – **color3** tentacles

2. **Student2** walks farther

3. It’s a tie! They got an equal number of votes

4. There are more **color4** M&Ms

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Work with area and perimeter (3.MD.7, 3.MD.8)

### Secret Snack Fridge

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**Answers**:

1. 270 square inches

2. 160 square inches

3. 120 square inches, since each sandwich covers 20 square inches

4. 146 inches

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Multiply a single digit number by a multiple of 10 (3.NBT.3)

### Our New School Pet

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**Answers**:

1. 80 teeth

2. 250 pieces of food2

3. 810 ice cubes

4. **Student3** swam longer, for 240 seconds vs. 210

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Interpret quotients as a number of shares or parts in a share (3.OA.2)

### Tallest Roller Coaster in Town

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**Answers**:

1. 3 straightaways

2. 9 **car3s**

3. 8 tickets each

4. 7 rounds

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Use the commutative, associative and distributive properties (3.OA.5)

### The Early Worm Gets the Apple

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**Answers**:

1. They drop the same number, 15 apples – because 3 x 5 = 5 x 3 (commutative property)

2. There are 16 more apples, and the total is now 80 apples (distributive property)

3. 36 apple slices.

4. 2 apples in each – because 2 x 6 x 3 = 6 x 2 x 3

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Work with elapsed time (3.MD.1)

### Diner Dogs

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**Answers**:

1. 3:31 pm

2. 58 minutes later

3. 5:09 pm, since 10 + 8 + 8 + 8 minutes have elapsed

4. 12:53 am, since the first batch comes out after 10 + 8 minutes

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