Topic: rays list of topics
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41 items are filed under this topic.

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	A 4 by 7 array		2015-10-27
		From star: don breaks a 4x7 array into a 2x7 array and another array.what is the fact for don's second array Answered by Penny Nom.
	Arrays		2014-01-18
		From Yesenia: Ray makes an array that has four rows of four counters. He wants to make two more arrays using the same number of counters. He wants more than one counter in each row. What two arrays can he make? Answered by Penny Nom.
	A number puzzle		2012-04-07
		From Kenya: my number is less than 25 my number of tiles will make only one rectangle my number is odd my number is a factor of 36 Answered by Penny Nom.
	One factor array		2011-09-16
		From Hana: hi my brother a 5th grade have a question. this is what it say "i have only one factor array, and i am between two numbers 12 and 16. what number am i?" Answered by Penny Nom.
	A division sentence for an array		2010-10-05
		From Laura: On a math test Grace needs to look at an array and write a division sentence for the array. Grace writes 18/3=6 on her answer sheet. Describe what the array on Graces test looks like. Answered by Penny Nom.
	Rectangular arrays		2010-09-29
		From Kim: My 4th grader has started working on rectangular array that shows 2 factors of a number. The problem reads on centimeter grid paper draw as many arrays as you can for each of the #'s 2,3,4, 5,6,7,,11,12,15 and 16. That would be great except I have no idea what they are talking about and I cannot offer any help to my daughter. Answered by Penny Nom.
	Arrays		2010-09-09
		From Susan: I'm a lawyer but evidently incredibly stupid at 4th grade math. . . .Question: cover a tabletop with 9 rows of square tiles with 9 squares in each row. How many tiles cover the tabletop? Then, the paper shows a 9x9 array and asks how it is used to solve the problem. My daughter wrote 9x9=81. The next question is "what are the products of the two smaller arrays?" ???? There are no other arrays - are we to make smaller arrays from the 9x9? how? Answered by Robert Dawson.
	Rays and angles		2010-06-24
		From cristina: what is the formula for finding the number of angels that can be named by a given number of rays with the same endpoint? Answered by Robert Dawson.
	Arrays		2010-01-21
		From Raven: Mary says that the greater the number of counters, the greater the number of different arrays you can form. Give an example that shows that Mary is wrong. Answered by Penny Nom.
	A 4 by 4 array		2010-01-06
		From Patricia: Ray makes an array that has four rows of four counters. He wants to make two more arrays using the same number of counters. He wants more than one counter in each row. What two arrays can he make? Answered by Robert Dawson.
	An array		2009-10-28
		From felicia: what factors are shown in the array below? ** ** ** ** ** ** Answered by Penny Nom.
	Bisecting rays		2009-09-09
		From frank: Ray OC bisects angle AOB, ray OD bisects angle AOC, ray OE bisects angle AOD, ray OF bisects angel AOE, and ray OG bisects angle FOC: if angle BOF=120 degrees, then find angle DOE? Confused! Answered by Penny Nom.
	Arrays		2009-04-23
		From billie: Ray makes an array that has 4 rows of 4 counters. He wants to make 2 more arrays using the same number of counters.He wants more than 1 counter in each row.What 2 arrays can he make? what 2 can he? What is an array anyway? Answered by Robert Dawson.
	Arrays of chairs		2009-01-08
		From Vickie: I am not sure how to help my son figure out one of his math journal problems. He is in third grade and this just seems a bit much for him. They have only been working on multiplication for about 3 weeks and just went back to school from Christmas break. Their other homework has been about arrays, so I guess his teacher wants this answered in some sort of array. Unfortunately I'm not sure. The problem states: If you have 24 chairs find the total number of ways the chairs can be arranged. Answered by Robert Dawson and Penny Nom.
	An array of tulip bulbs		2008-09-06
		From Mary: My daughter had this problem on one of her tests. She forgot to ask her teacher what she did wrong. I understand she did not answer the question in full, but what she did answer I feel is right. Please explain to me the correct answer. Thank you. Mary Answered by Harley Weston.
	Number of angles formed by rays		2008-08-29
		From Shon: what is the formula for finding the number of angels that can be named by a given number of rays with the same endpoint? Answered by Stephen La Rocque.
	I am a prime number		2007-10-31
		From sherry: I am a prime number. I can not be shared fairly except by one group. My array can only be one row. array can only be one row. Can you please explain this out to me so I can help my child with it. Thanks Answered by Penny Nom.
	An array for 31		2007-10-31
		From sherry: How do you make an array with the number 31 Answered by Penny Nom.
	Find my number using the following clues:		2007-09-18
		From T: Find my number using the following clues: my number will make an array 2 rows wide my number is greater than 5 my number is less than 30 my number will make a square array my number is________? I was not sure where to begin with this word problem - can you help?? Thank you, T Answered by Penny Nom.
	A number story		2007-09-14
		From Roxanne: Make an array for the number sentence 4*8= 32 then they want me to write a number story for the number sentence. Answered by Penny Nom.
	Making dot arrays		2007-09-05
		From angela: What do we call the numbers that cannot be arranged into 2-row arrays? Answered by Penny Nom.
	Arrays		2007-03-14
		From Charla: My 3rd grader has been given a problem about mathematical arrays. Name two smaller arrays you can use to find the product. 7 x 6=3D ____ Answered by Diane Hanson.
	Can you make an array for 19?		2007-01-25
		From Caleb: can you make an array for 19 Answered by Penny Nom.
	Arrays		2006-09-28
		From Taylor and Laura: Hello. My daughter Taylor is in 4th grade and has an assignment about Arrays. My husband and I had no idea what an Array was. At least not in mathematical terms. What is an array? I don't think I ever studied this when I was a kid. Answered by Penny Nom.
	2-row arrays		2006-09-06
		From Liz & Samantha: What do you call the numbers that cannot be arranged into 2-row arrays? Answered by Penny Nom.
	Rays		2006-08-31
		From Natasha and daughter: My daughter, Natasha, is in 4th grade. She had the following homework question about rays that confused us: Name as many rays as you can in the figure below. Answered by Penny Nom.
	Broken-line graphs and histograms		2006-02-16
		From George: 1. What is the main difference between a broken-line graph and a histogram? Both represent continuous variables. 2. What is the correct way to read a multiplication array: x-axis first and then y-axis, other way around or it doesn't matter? Answered by Penny Nom.
	Arrays of 36 items		2006-02-01
		From A parent: My third grader brought home this math problem: Here are five arrays for 36. 1. Lable the dimension for each array. 2. Write a multiplicatiuon sentence for each arrray. Answered by Penny Nom.
	An array problem		2006-01-31
		From Cynthia: Write a number sentence for this array........ It's a rectangle box 3 down and 4 wide. Answered by Penny Nom.
	Write the array for 3		2006-01-29
		From Jamie: My son is a 5th grader and came home with a math question that I can't answer. The question stated - "Write the array for 3" I don't understand how this can be done with just one number. Answered by Penny Nom.
	What are math arrays?		2006-01-18
		From Jeff: What are math arrays? Answered by Penny Nom.
	Arrays		2006-01-12
		From Sergio and Anthony: Hi my son Anthony is in Third Grade and the question on his homework that we're having trouble answering is the following: Name two smaller arrays you can use to find the product. 6 x 9 = 54 What are they exactly asking? Which is the correct answer? Answered by Diane Hanson and Penny Nom.
	An array of pennies by year		2005-12-29
		From Sheila: What is an array? How do you create an array using 100 pennies by years? Answered by Penny Nom.
	Arrays		2005-10-17
		From Danette: My son's fourth grade workbook is asking him to draw four possible arrays for 72 marbles. I don't understand what they mean Answered by Penny Nom.
	Who is taller: John or Mary?		2005-09-14
		From Ulises: All the students in a school are arranged in a rectangular array. After that, the tallest student in each row was chosen, and then among these John Smith happened to be the shortest.Then, in each column, the shortest student was chosen, and Mary Brown was the tallest of these. Who is taller: John or Mary? Answered by Penny Nom and Claude Tardif.
	Arrays		2004-04-23
		From Jan: 4x7 = 28 How many arrays can this have? How do you determine the arrays??? Answered by Penny Nom.
	Arrays		2004-02-19
		From A parent: please demonstrate mathematical arrays fro a 3rd grader Answered by Penny Nom.
	Arrays of pennies		2004-01-17
		From Kathleen: How do I create an array of 100 pennies? Answered by Penny Nom.
	Two row arrays		2003-09-03
		From Madalyn: My question is, what are #'s that can not be arranged in two row arrays called? Answered by Penny Nom.
	An array of pennies		2003-05-23
		From Saundra: If you have 100 pennies and you are suppose to make an array do you arrange the pennies by date? Answered by Penny Nom.
	Mathematical Arrays		1998-05-01
		From Gene Lanctot: Could someone please explain what a mathematical or arithmetical array is? The array in question is used in grade three math in Ontario. I would also like to know what its purpose is. Answered by Harley Weston.

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