December 18th POW Answer

Thank you from Room 9!

I wanted to take a moment to thank all of the wonderful students and families of Room 9! I really love and appreciate all of you and wish you a very happy holidays. Thank you so much for all the amazing gifts and treats that you have given this week. You sure know how to make a teacher feel special!

Thanks again for being a part of my wonderful school family,

Katie

Addition Strategies

December 10th POW Answer

Due to the fact students did not complete the POW this week, I will keep the same one out for next week with the hopes that students finish it! The answer will be provided next week.

Fractions to Decimals

November 20th POW Answer

Solution: May and June.

To see how this works, all you need to know is that months with 30 days push the first of the month ahead two days of the week, whereas months with 31 days push ahead three days. For example, March has 31 days, so if March 1 is a Tuesday, then April 1 is a Friday (move ahead three days of the week). Similarly, April has 30 days, so May 1 will be a Sunday (move ahead just two days of the week).

The table below summarizes what will happen in leap and non‐leap years. August does not share the same day with any other month in a non‐leap year, and October does not share the same day with any other month in a leap year — but only May and June never share the same day of the week with any other months, whether it’s a leap year or not. Month	Months with Same First Day in a Non‐Leap Year	Months with Same First Day in a Leap Year
January	October	April, July
February	March, November	August
March	February, November	November
April	July	January, July
May	None	None
June	None	None
July	April	January, April
August	None	February
September	December	December
October	January	None
November	February, March	March
December	September	September

November 13th POW Answer

Solution:  532. 
Because we want the largest result possible, you should try to do two things: make the denominator of the fraction as small as possible, and make the numerator as large as possible.
To make the denominator as small as possible, you can use subtraction and division. The smallest possible denominator can be obtained with 1 – 8 ÷ 9, which has a value of 1/9, and
dividing by 1/9 is the same as multiplying by 9. That’s a good start. Then, to make the numerator as large as possible, take the three greatest remaining digits 5, 6, and 7, and combine them with the remaining operations, + and ×. The largest expression that can be formed in the numerator using these digits and operations is 6 × 7 + 5. Luckily, the result with this numerator and denominator contains the remaining three digits, 2, 3, and 4.


This is a very good answer, and if this is the answer you obtained, you should be very proud!
However, there is a better answer. If you compromise just a little on the size of the denominator, you can increase the size of the numerator, which will yield a greater result. In the denominator, use 1 – 6 ÷ 7, which has a value of 1/7. Dividing by 1/7 is the same as multiplying by 7, which isn’t as good as multiplying by 9, but it’s still pretty good. The benefit of doing this is that it leaves the largest digits, 8 and 9, to be used in the numerator. You can then make the expression 8 × 9 + 4 for the numerator, which will yield a final result on the right containing the digits 2, 3, and 5 that is greater than 423.

November 5th POW Answer

You would need to pull 48 candies!

October 30th POW Answer

$105.60

Division Strategies

Multiplication Strategies

October 16th POW Answer

Square C= 3

October 8th POW Answer

The "million mystery" number is 9,687,534.

October 2nd POW Answer

120 PB&J Sandwiches

September 25th POW Answer

119 wings in the bucket!

September 17th POW Answer

It takes 25 crossings to get the initial ogres and gnomes across the river.
It takes 37 crossings to get 9 ogres and 2 gnomes across the river.

9-3-15

Week 37 POW Answer

Lila's Class

5 Like to Hike
10 Like to Fish
3 Like to do Both

11 Like Swimming
4 Like Swimming and Bicycling
2 Like all Three

Week 35 POW Answer

1. 31 Students
2. 5 Students
3. 20 Students
4. 8 Students

Week 34 POW Answer

3 packs of cups
2 packs of plates
4 boxes of ice cream sandwiches
3 boxes of juice

They bought 69 items in all

Week 33 POW Answer

Nicki earned $10.00

Week 32 POW Answer

Laurie- 2lbs. 8 oz. or 40oz.
Olivia- 2lbs. 1oz. or 33oz.
Peter- 2lb. 9oz. or 41oz.
Yuri- 2lbs. 1oz. or 33oz.

Week 31 POW Answer

Henry's friend lives at the corner of Twelfth and H Streets.

Solution to bonus question: He arrived home at 6:15pm.

Week 30 POW Answer

Rainfall Records
Anna: Seattle, Washington
Marty: Portland, Maine
Gina: San Francisco, California
Dwayne: Dallas, Texas
Emily: Chicago, Illinois
Randy: Miami, Florida

Large Number Division Strategies

 

 

Common Core Standard 4.NBT.6: Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

Week 29 POW Answer

The million mystery number: 9,687,534

Week 28 POW Answer

64 Cherries!

Week 27 POW Answer

Royal Teams

Royals 90%
Knights 45%
Dukes 40%
Crowns 35%
Bishops 25%

Week 26 POW Answer

Only Skied   Boys: 4   Girls: 10
Only Snowboarded   Boys: 2   Girls: 0
Neither Skied nor Snowboarded   Boys: 6   Girls: 10
Both Skied and Snowboarded   Boys: 12   Girls: 4

Total: 24 boys and girls

Division Strategies

 

Common Core Standard 4.NBT.6: Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

Week 25 POW Answer

Polka-dot pitcher: 7/8 full of lemonade
Striped pitcher: completely full of punch

Week 24 POW Answer

Alyssa- Peach 1/12
Dalton- Blueberry 1/8
Rowan- Chocolate 1/8
Shane- Apple 1/5

Helpful Definitions

Common Core Standard 4.G.2: Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.

Week 23 POW Answer

Due to the difficult POW problem this week, students who showed work and turned it in got a ticket! :)

Week 22 POW Answer

The POW answer for this week will be posted next week. Due to the short week, we are allowing students two week to finish the problem.

Week 21 POW Answer

120 Sandwiches

Week 20 POW Answer

$105.60

Week 19 POW Answer

The POW answer for this week will not be posted until next week. Due to the short week, students can complete this week's POW through the end of next week (1/29)! :)

Subtraction Strategies

 

Common Core Standard 4.NBT.4: Fluently add and subtract multi-digit whole numbers using the standard algorithm.

Week 18 POW Answer

Square C= 3

Addition Strategies

 

Common Core Standard 4.NBT.4: Fluently add and subtract multi-digit whole numbers using the standard algorithm.

Week 17 POW Answer

There are 15 balls in the closet.

60% of the balls are soccer balls.