Array Vocabulary
An array is
Equal Groups
3 x 2 = ?
3 x 2 = 6
Skip counting is one strategy for repeated addition. Name one other way.
Array, numberline, equal groups, doubling.
True or False:
Rows run horizontally.
True.
1000 x 2 = ?
1000 x 2 = 2000
Opposite of Multiplication is
Division
10 x 4 = ?
10 x 4 = 40
Repeated addition is the first step to which math operation?
Multiplication
This word describes a set of objects arranged neatly in rows and columns to help visualize multiplication.
An array.
If you double the number of rows in an array, while the columns stay the same. How does the total number of items change?
The total doubles.
A factor is
The numbers in an equation
2 x 7 = ?
2 x 7 = 14
2 x 4 = 8, could be what as repeated addition?
2 + 2 + 2 + 2 = 8
or
4 + 4 = 8
An array can form which 2D shape?
or
Rectangle
What happens when you divide a number by 0?
Nothing. It is impossible.
An equation is
the multiplication problem
3 x 6 = ?
3 x 6 = 18
3 + 3 + 3 + 3 + 3 + 3 = 18
or
6 + 6 + 6 = 18
How can you find the total number of items in an array (not counting)?
What is the product of 8 x 7?
56
The product is
The answer in a multiplication problem!
3 x 4 = ?
3 x 4 = 12
7 groups of 9 means what as repeated addition?
7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 = 63
or
9 + 9 + 9 + 9 + 9 + 9 + 9 = 63
Which of the following is NOT true about arrays?
A) Arrays show multiplication visually
B) Arrays always have the same number of rows and columns
C) Arrays can be used to model area
B) Arrays always have the same number of rows and columns IS NOT TRUE
Name two different ways to express "multiplication" as an operation "x." (Example: 2 multiplied by 2)
Times, groups/sets of, factors, repeated, area, exponents.