Write a multiplication equation to represent the triangle array.
4x5 or 5x4
Solve the following using an efficient strategy.
4x7
28
2x7= 14, so double 14
7+7+7+7
7, 14, 21, 28
Which equation represents 4 x 7? Choose 2
a. 4 x7 = (2x3) + (2x4)
b. 4 x7 = (2x7) + (2x7)
c. 4 x7 = (4x3) + (4x4)
d. 4 x7 = (2x7) x (2x7)
b and c
What is the area of a square with a length of 6 inches?
36 square inches, a square has all equal sides. 6 length and 6 wide. 6x6= 36
Draw a visual representation for 7 x 4.
ex: 7 boxes with 4 things inside
Solve the following using a strategy.
8 x 5
40
8x4=20. 20+20=40
5,10, 15, 20, 25, 30, 35, 40
Which equation represents 8 x 9? choose 2
a. 8 x 9 = ( 8 x 5) + (8 x 4)
b. 8 x 9 = ( 4 x 5 ) + (4 x 4)
c. 8 x 9 = ( 5 x 5 ) + (3 x 4)
d. 8 x 9 =( 5 x 9 ) + (3 x 9)
a and d
What is the area of rectangle below? each square is 1 sq. ft.
32 square feet because 4 rows by 8 columns
Write an equation with a letter standing for the unknown quantity.
3x5 or 5x3
Solve the following using a strategy.
3x9
27
3x10=40, take away a group of 3
Emerson says that he can solve 4 x 6 by using the following equation:
(2 x 3) + (2 x 3)
Do you agree or disagree?
disagree because he broke up (decomposed) two factors instead of one factor
Zuleyka counted 6 dogs at the park. Complete the table in order to determine how many legs are on 6 dogs.
4-16 legs
5-20 legs
6-24 legs
A Funko Pop costs $13. Ms. Juarez bought 7 Pops. How much money did she spend?
$91
Solve using a strategy.
4 x 15
60
4x10 = 40
4x5= 20
40 + 20 = 60
15+15+15+15 = 30 + 30 = 60
Which equation is equivalent to (3 x 4) x 2?
a. (3+4) x 2
b. (3 x 4) + 2
c. 3 x (4 x 2)
d. 3 x (4 + 2)
c
Monserrat's dad wants to make a pen for Emerson. Which dimensions would give him the largest area? Explain your answer.
a. 4 yards by 6 yards
b. 3 yards by 7 yards
c. 5 yards by 4 yards
d. 7 yards by 8 yards
d because 7x8=56 square yards
Emerson has 7 bags of treats. Each bag has 16 treats inside. How many treats does Emerson have?
112 treats
Solve using a strategy.
8 x 19
8 x 10 = 80
8 x9 = 72
80+72 = 80 + 70 = 150 + 2 = 152
Alex says that 5 x (3 x 2) is equivalent to (5 x 3) x 2. Do you agree or disagree with Alex?
Agree because the associate property of multiplication says that you can multiply numbers in any order and get the same product.
If a rectangle has a total area of 18 square inches, what could be the possible lengths of the sides?
2x9
3x6
18x1