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Kyleigh
Questions (94)
One of your middle school students was interested in infinite repeating decimals. He noticed that when he tried to convert N =
1 answer
141 views
One of your middle school students was interested in infinite repeating decimals. He noticed that when he tried to convert N =
1 answer
79 views
When asked to find a number between 1.4 and 1.5, one of your students responded 1.4½. Is she correct? What decimal do you think
1 answer
105 views
Suppose an elementary school student asked you why uniting zeros to the right of a whole number increases the value of the
1 answer
87 views
One kilometer is 1000 meters. The length of a soccer field for international matches is 110 meters. What decimal part of a
1 answer
78 views
Physicists have calculated that one cubic foot of air weighs 1.29152 ounces. What is this weight rounded to the nearest tenth of
1 answer
34 views
A sewing machine has attachments called throat plates for making eyelets. If the holes on a certain throat plate are .218, .14,
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125 views
Write each repeating decimal as a quotient of integers.
.217 repeating
1 answer
75 views
Each 1 X 10 strip represents 1 unit.
1 answer
40 views
Two students were discussing unit fractions, that is, fractions like 1/2, 1/3, 1/4, 1/5, etc., with 1 in the numerator.
One
1 answer
154 views
Anna likes working with fractions and understands the equality and inequality lessons with Fraction Bars.
After class she asks
1 answer
76 views
Anna likes working with fractions and understands the equality and inequality lessons with Fraction Bars.
After class she asks
1 answer
82 views
Suppose you were teaching and some students asked you if there is a smallest positive number. Write a sequence of questions that
1 answer
101 views
To pass inspection in a certain state, a car's tire treads must have a depth of at least 1/16 inch. If the tires on a car have
1 answer
75 views
Pure gold is quite soft. To make it more useful for such items as rings and jewelry, jewelers mix it with other metals, such as
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132 views
Write each of the mixed numbers
2/5/6
1 answer
41 views
Between any two fractions there are an infinite numberd fractions. Find a fraction that is between the fractions each pair
8/9
1 answer
110 views
Between any two fractions there are an infinite numberd fractions. Find a fraction that is between the fractions each pair
1/3
1 answer
107 views
If the unit rod is the orange rod, what fraction is represented by the black rod?
1 answer
58 views
What is the unit rod if the purple rod represents 2/3?
1 answer
57 views
If the height of a girl is 4 feet and the height of a basketball rim above the floor is 10 feet, the height of the girl is what
1 answer
77 views
On a school debate team there are 6 boys and 8 girls.
What fraction of the debate team is boys?
1 answer
81 views
On a school debate team there are 6 boys and 8 girls.
What fraction of the debate team is boys?
1 answer
93 views
A 14-mile route is divided into 6 equal parts for a relay race. What fraction of a mile is the length of each part of the race?
1 answer
93 views
Look for patterns and state a general conjecture regarding the sums for
+1 +2 +3 ‡4 ‡5….. +6 In where n is any whole number
1 answer
66 views
Here are the enumbers done ating values of the comsecutive whole numbers from 1 t0 3.
‡1 ‡2 ‡3 Consider selecting either
1 answer
71 views
In a city golf tournament each golfer played 18 holes of golf per day for 4 days. If a player pars a hole, that is, gets the
1 answer
125 views
A radio station that keeps records of the low temperature each day obtained the following information. The temperature on Monday
1 answer
110 views
Determine whether the set is closed for the given operations in exercises 25 and 26. Explain your answer. If not closed give an
1 answer
140 views
One very important reason for not classifying 1 as a prime number can be seen in the Fundamental Theorem of Arithmetic. Explain
1 answer
175 views
A teacher used the following activity to convince one of his elementary school students that 1 is not a prime number. Using
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98 views
As a teacher, some of your students have become con. fused over the concepts of greatest common factor GCF) and least common
1 answer
143 views
As a teacher, some of your students have become con. fused over the concepts of greatest common factor GCF) and least common
1 answer
124 views
A scientist receives signals from three quasars (distant sources of radio energy). The first quasar sends signals every 84
1 answer
84 views
For science day, a school is showing two films: one on volcanoes that is 24 minutes long and one on tornadoes that is 40 minutes
1 answer
84 views
A clock shop has three cuckoo clocks on display. The cuckoos appear at different time intervals. One comes out every 10 minutes,
1 answer
97 views
A bakery has 300 chocolate chip cookies and 264 peanut butter cookies. The bakers wish to divide the chocolate chip cookies into
1 answer
103 views
A bakery has 300 chocolate chip cookies and 264 peanut butter cookies. The bakers wish to divide the chocolate chip cookies into
1 answer
104 views
Shane has 72 inches of copper wire and 42 inches of steel wire. What are the largest pieces he can cut these wires into so that
1 answer
91 views
Looking Back. The Venn diagram helps to answer other questions. How many numbers less than or equal to 300 are multiples of 3
1 answer
173 views
Carrying Out the Plan. The following Venn die. gram helps us to visualize the information. Recons he numbers of multiples in the
1 answer
156 views
Devising a liples Since some of the multiples of 3 are also multiples of 5, we nced to consider the 3. tersection of the set of
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185 views
Understanding the Problem. The number of multiples of 3 from 1 to 9 is 9 ÷ 3 = 3.
1 2 3 4 5 0 7 8 9 How many multiples of 3 are
1 answer
119 views
If five black (7 units) rods are used to make a one-color train and nine black rods are used to make a second one-color train,
1 answer
50 views
If the brown rods (8 units) and the orange rods (10 units) are each used to form the shortest possible one-color train of
1 answer
87 views
If the dark green rods (6 units) and the brown rods (8 units) are each used to form the shortest possible one-color train of
1 answer
81 views
If six yellow (5 units) rods are used to make a one-color train and eight yellow rods are used to make a second one-color train,
1 answer
62 views
A six-digit number of the form abcabc (for example, 249,249) always has several certain prime number fac-tors. Which prime
1 answer
86 views
When Ms. Lopez asked her class to use their tiles and make rectangular arrays for the counting numbers 1 to 12, Robert made only
1 answer
78 views
Two students were discussing whether or not the sum of any three consecutive whole numbers was divisible by 3. One student said
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89 views
Joan's age was a factor of her grandfather's age for 6 consecutive years. What were her grandfather's ages
during this time?
1 answer
80 views
If a collection of pencils is placed in rows of 4, there are 2 pencils left; if placed in rows of 5, there are 3 left; and if
5 answers
49 views
Featured Strategies: Using a Model, Making a Table, and Solving a Simpler Problem. In a new school built for 1000 students,
1 answer
108 views
Featured Strategies: Using a Model, Making a Table, and Solving a Simpler Problem. In a new school built for 1000 students,
1 answer
116 views
Featured Strategies: Using a Model, Making a Table, and Solving a Simpler Problem. In a new school built for 1000 students,
1 answer
101 views
Featured Strategies: Using a Model, Making a Table, and Solving a Simpler Problem. In a new school built for 1000 students,
1 answer
120 views
Two of the many conjectures involving primes are given in exercises 36 and 37.
In 1845 the French mathematician Joseph Bertrand
3 answers
88 views
Two of the many conjectures involving primes are given in exercises 36 and 37.
36. The mathematician Christian Goldbach
1 answer
98 views
It is likely that no one will ever find a formula that will give all the primes less than an arbitrary number. The formulas in
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117 views
It is likely that no one will ever find a formula that will give all the primes less than an arbitrary number. The formulas in
1 answer
103 views
The numbers in the following sequence increase by 2, then by 4, then by 6, etc. Continue this sequence until you reach the first
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69 views
The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.
Is 367 prime or composite?
1 answer
44 views
The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.
Is 367 prime or composite?
1 answer
42 views
The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.
a. Which of these prime numbers would you have to consider
1 answer
97 views
If alb and alc, then al(b - c).
1 answer
107 views
If alb and arc, then aX bc.
1 answer
117 views
If alc and b|c, then (a + b) c.
1 answer
115 views
Sketch base-ten pieces for the number 1140 and explain how the test for divisibility by 8 can be used to obtain the remainder
1 answer
110 views
Sketch base-ten pieces for the number 2056 and explain how they can be used to illustrate the test for divisibility by 8.
1 answer
75 views
Sketch base-ten pieces for 2133 and explain how the test for divisibility by 4 can be used to obtain the remainder when dividing
1 answer
70 views
Sketch base-ten pieces for the number 1316 and explain how they can be used to illustrate the test for divisibility by 4
1 answer
78 views
Is 391 prime
1 answer
66 views
Is 431 prime
1 answer
43 views
Is 187 prime?
1 answer
40 views
If a number is divisible by 6, is it divisible by 12?
1 answer
42 views
If a number is divisible by 12, is it divisible by 6?
1 answer
49 views
Determine the remainder when the number is divided by 3.
907,116,341
1 answer
90 views
If any nonsquare number has four different rectangular arrays, how many factors does it have?
1 answer
105 views
What kind of a number will have five factors? Find the smallest such number.
1 answer
73 views
Two of the given numbers have square arrays. Make a coniecture about the number of factors for square numbers. Explain how your
1 answer
108 views
What is the smallest number of red rods for which an all-red train is equal in length to an all-blue train?
1 answer
57 views
If a number can be represented by an all-red train, an all-green train, and an all-black train, it has at least eight factors.
1 answer
57 views
If an all-brown train is equal in length to an all-orange train, what can be said about the number of brown rods compared to the
1 answer
79 views
Multiply 36x5 using equal product
1 answer
51 views
Multiply 16x6 by using equal product
1 answer
39 views
Sketch a new set of base pieces for each product in exercises 5 and 6, and then show regrouping.
Multiply 168 by 3.
1 answer
85 views
Use the number line to show that 2 X (3 + 2) =
2 × 3 + 2 × 2.
1 answer
35 views
Describe the positions of the fingers for 7 × 6. Does the method work for this product?
One of the popular schemes used for
1 answer
112 views
A student who was experimenting with different methods of multiplying two whole numbers noticed that when she increased one
1 answer
106 views
Two students were discussing their lesson on different number bases for positional numeration systems. One student said there is
1 answer
91 views
Kathy read 288 pages of her 603-page novel in 9 days.
How many pages per day must she now read in order to complete the book and
1 answer
83 views
Harry has $2500 in cash to pay for a secondhand car, or he can pay $500 down and $155 per month for 2 years. If he doesn't pay
1 answer
122 views
A student opened her math book and computed the sum of the numbers on two facing pages. Then she turned to the next page and
1 answer
132 views
When 6-year-old Melanie arrived home from school, she was the first to eat cookies from a freshly baked batch. When 8-year-old
1 answer
93 views
