Factors
What are the factors of 17?
1 and 18
There were some rabbits in a pen, Altogether I counted 56 feet. How many rabbits were in the pen?
14 rabbits
Give a definition of a prime number.
A number that has exactly two unique factors (one and itself).
What remainders are possible when the divisor is 12?
0 through 11
11
How many factors does 28 have?
6
How many cars are needed to take 46 Girl Scouts to a community center after school if each car holds six Girl Scouts in addition to the driver?
8 cars
Use three math terms you learned in this unit to describe the number 36.
Possible responses: square, even, composite
Write a related sentence that uses multiplication for 45/6?
7 X 6 + 3 = 45
It is divisible by 10. The tens digit is equal to the number of legs on an insect.
60
Give an example of a number with exactly 3 different factors.
Any square of a prime number (4, 9, 25, 49...)
Pens cost $1.29 each. Use mental math to figure out how much it will cost to buy five pens.
$6.45
What do the words product, sum, quotient and difference have in common?
All are the answers to an operation
The quotient is 13, the divisor is 6, and the remainder is 3. What is the dividend?
81
It is odd. It is prime. The product of the digits is 15.
53
List the factors of 39
1, 3, 13, and 39
Jose has been collecting recycles cans for a charity drive. Each can is worth 5 cents. Jose has raised $2.35. How many more cans does he need to collect in order to have a donation of $5.00?
53 cans
What are the divisor and dividend, and how are they related?
The divisor is the number in a division problem that divides into another number, known as the dividend.
Jon said that 23 divided by 0 equals 0, but Carla disagreed and said there is no answer. Who is right? Explain.
Carla is right since the multiplication sentence that corresponds to the division problem is 0 times 0 = 23, which is false. No answer is possible.
It is composite. The digits add to 12. One of the factors is 13.
39
What is the greatest common factor of 24 and 18?
6
If hot dogs come in packages of eight, and buns come in packages of 12, what is the minimum number of hot dog and bun packages needed so every bun has one hot dog?
3 packages of hot dogs and 2 packages of buns (DAILY DOUBLE)
Explain how a multiple and a factor are alike and different.
A multiple and factor are both terms used to describe multiplicative relationships; a factor is a number that divides exactly into a given whole number, and a multiple is a number that is the product of a given number and a whole number.
632 divided by 9
70 R2
The digits sum is 9. It is odd. It is a square number.
81