Facts on Arrays
Multiplication
Solve that Array
How do you know & Addends
Review
100
Arrays have R___ and C______
Rows and Columns
100
3 x 2 =
6
100
Write the equation and solve this array.
4 x 6 = 24
100
How do you know that 10 is an even number?
because you can count by 2's
2,4,6,8,10
100
Juan had 67 video games. He sold some and he now has 35. How many did Juan sell?
answer is 32
200
Do arrays need equal objects in each row and column?
Yes
200
4 X 6 =
24
200
5 x 10 =50
200
How do you know that 15 is an odd number?
because when I draw out 15, I don't have equal parts
200
Find the value of 672 - 492.
answer is 180
300
What is the multiplication equation for this array? What is the product?
2 x 4 = 8
300
How many times does 5 go into 30?
6
300
Write the array and solve this problem.
6 x 9 = 54
300
Which equation represents the total of 20 squares using equal addends?
a) 10+5+5=20
b) 4+4+4+4=20
c) 5+5+5+5=20
d) 20+0=20
answer is C
300
How much is 2 dimes, 2 quarters, and 3 pennies worth?
$0.73
400
Draw and array on your white board for 7 x 1.
X
X
X
X
X
X
400
2 rows of 8 is ?
16
400
Write the equation and the product.
6 x 6 =36
400
How would you write this equation in multiplication form?
3+3+3+3+3+3=
6x3=18 or 3x6=18
400
How do you write 846 in expanded form?
800+40+6
500
In this unit that we just finished and will take a test on tomorrow, we used arrays to ________________
Multiply
500
8 rows of 6 is ?
48
500
)
8 x 15 = 120
500
How would you write this multiplication problem in repeat addition form?
4x5=20
4+4+4+4+4= 20
or 5+5+5+5=20
500
What is seven hundred twenty-five plus two hundred and nine?
The answer is nine hundred thirty-four or 934