Arrays and Factors
If you have an array that shows 2 rows of 3, what would be the equation to show that, and which factor represents the number of rows?
2 x 3 = 6
2 is the factor that shows the number of rows
Tammy has 3 puppies. Each puppy gets a plate with 3 treats on it. How many treats were there in all? What equation would explain this word problem?
3 x 3 = 9 treats
Using the distributive property, is the following true or false?
3 x 4 = (3 x 3) + (3 x 1)
True because 12 = 9 + 3
3 x 30 =
90
80 x 3 =
240
If you have an array that shows 4 rows of 3, what would be the equation to show that, and which factor represents the number of rows?
4 x 3 = 12
4 would be the factor that shows the number of rows
Andy needs to walk 2 miles each day of the week. How many miles will he have walked at the end of the week? What equation would explain this word problem?
2 x 7 = 14 miles
Using the distributive property, is the following true or false?
4 x 5 = (4 x 3) + (4 x 3)
False because 20 does NOT = 12 + 12
50 x 4 =
200
What are the factors in the following equation?
4 x 7 = 28
4 and 7 are the factors
If you have an array that shows 5 rows of 6, what would be the equation to show that, and which factor represents the number of rows?
5 x 6 = 30
5 would be the factor that shows the number of rows
The mama cat had 5 kittens. Each kitten has 4 legs. How many kitten legs are there in all? What equation would explain this word problem?
5 x 4 = 20 legs
Using the distributive property, is the following true or false?
6 x 3 = (6 x 1) + (6 x 2)
True because 18 = 6 + 12
70 x 6 =
420
8 x ____ = 40
What number is missing from the equation?
5
If you have an array that shows 7 rows of 8, what would be the equation to show that, and which factor represents the number of rows?
7 x 8 = 56
7 would be the factor that shows the number of rows
The teacher needs to bring in 2 donuts for each student who got 100% on their math tests. 8 children received 100%. How many donuts does the teacher need to bring?
2 x 8 = 16 donuts
Using the distributive property, is the following true or false?
7 x 8 = (7 x 3) + (7 x 5)
True because 56 = 21 + 35
50 x 9 =
450
Tim painted a picture with an area of 12 square feet. If the length of the picture is 3 feet, what is the width?
A = l x w, so if the length is is 3 feet, then the width would be 4 feet because it equals a total of 12 square feet.
If you have an array that shows 9 rows of 8, what would be the equation to show that, and which factor represents the number of rows?
9 x 8 = 72
9 would be the factor that shows the number of rows
The waitress brought out 3 biscuits for each person at our table. There were 11 people at our table. How many biscuits did the waitress bring out?
3 x 11 = 33 biscuits
Using the distributive property, is the following true or false?
11 x 7 = (11 x 6) + (11 x 4)
False because 77 does NOT = 66 + 44
9 x 70 =
630
The classroom is 48 square units. If the teacher wanted to put in a new colorful rug for reading time, would a rug tat is 6 units by 7 units fit? How do you know?
Yes, because 6 x 7 is only 42, so it would fit a room that is 48 square units.