Arrays
Multiples
Random
Factors
Multiplicative Comparisons
100
What are the dimensions of this array?
There are 4 rows and 6 columns, or a 4 by 6 array.
100
What are multiples?
Numbers that you land on when you skip count.
100
Read the statements below.
(a) 23 is a prime number.
(b) 15 is a prime number.
(c) 26 is a composite number.
Which statements are false?
Statement B. 15 is a COMPOSITE number.
100
What are factors?
The dimensions of an array or the two numbers that are multiplied to get another number.
100
John is 3 years old. His sister is 2 times older than he is. How old is John's sister?
John's sister is 6 years old.
200
The length of an array is 7 inches and the width is 4 inches. What is the total number of the array?
The array has a total of 28 square inches.
200
What are the first 5 multiples of 11?
11, 22, 33, 44, and 55
200
Write an equation with a variable that matches the following problem:
Jaidyn lives 2 miles away from school and Wildi lives 4 miles away from school. How many times further away from school does Wildi live?
2 x ? = 4
200
List all the factors of 25.
1, 5, 25
200
Rewrite the following sentence as an equation:
Twelve is twice as much as six.
12 = 2 x 6
300
Draw an array for the number 21.
or
300
Which of the following are NOT multiples of 9?
(a) 3
(b) 9
(c) 27
(d) 108
(a) 3
300
Write an equation with a variable that matches the following problem:
Zanayah went apple picking and picked 18 apples. She picked twice as many apples as Nevaeh. How many apples did Nevaeh pick?
18 = 2 x N
300
List all of the factors of 42.
1, 2, 3, 6, 7, 14, 21, 42
300
This summer, Christina read 24 books. She read 4 times as many books as Daniel. How many books did Daniel read this summer?
Daniel read 6 books.
400
Numbers that only have one array (or only one factor pair) are called...?
Prime Numbers
400
51 is a multiple of 3. True or false?
True!
400
Which of the following sentences describe a comparison using multiplication?
(a) It rained twice as much in Atlanta than it did in Boston.
(b) The bag of Twizzlers cost $5 more than a bag of Skittles.
(c) It took Brooklyn 4 times as long to complete the math homework as Ms. Li.
(a) and (c)
400
Is 81 a prime or composite number? Prove it.
Composite number
Factor Pairs:
1 x 81
3 x 27
9 x 9
400
The tree in Ms. Galvin's backyard is 54 feet tall. Her son is 6 feet tall. How many times taller is the tree in Ms. Galvin's backyard than her son?
The tree is 9 times taller.
500
Numbers that have more than one array (or more than one factor pair) are called...
composite numbers!
500
All even numbers are a multiple of 2.
Is the statement above true or false? Explain why or prove it!
True because I can land on any even number when I skip count by 2.
500
Ms. Li's favorite number is 16. Is 16 a prime, composite, or square number?
16 is both a composite AND a square number.
500
List the factor pairs of the number 33.
1 x 33
3 x 11
500
Ms. Li has 15 stickers. She has 3 times as many stickers as Mrs. Janiec. How many stickers does Mrs. Janiec have?
Mrs. Janiec has 5 stickers.