Unknowns
What does n equal?
n x 9 = 81
n = 9
What is the inverse of multiplication?
division
A pet shop has 45 toys. There are 5 toys in each bin. What equation would be used to solve this the number of bins?
45 divided by 5= __
Angela has 30 puppies. She had to give away 10.
What is the equation to represent this problem?
30 - 10 = __
There are 96 fourth graders at Small Tree Intermediate School. 43 on them are girls. On Friday, 5 fourth grade girls and 4 fourth grade boys were absent. How many fourth grade boys were at Small Tree Intermediate School on Friday?
49 boys
10 divided by t = 5
What does t equal?
t = 2
What is the inverse of division?
multiplication
Sara had a stamp collection. Each page in her stamp book fits 8 stamps. She has 64 stamps. How many pages are in her book?
8 pages
Ahmed has 30 friends. Each gave him 10 toys.
What equation would represent this problem?
30 x 10= ___
Mrs. Harris's group got 12 cakes for the classroom. Each cake is cut into 4 pieces. The class eats 32 pieces. How many pieces were left over?
(12 x 4) - 32 = C
C= 16 pieces
In the expression below, n represents an unknown number. What expression is equivalent to n x 5
5 x n
What multiplication equation could help you solve 20 divided by 2?
2 x 10
Celia earns $12 each week babysitting. How much will she earn in 4 weeks?
12 x 4 = $48
Catherine has 30 magazines. She put them into 10 stacks.
What equation would represent this problem?
30 divided by 10 = __
Peter has four horses. Each one eats 4 pounds of oats, twice a day. How many pounds of oats does he need to feed his horses for 3 days?
96 pounds of oats
What number goes in the blank? 5 x __ = 35
7
What is another way to write 15 x 3
(3 x 10) + (3 x 5)
Rebecca was making brownies. She has 20 brownies with chocolate chips and 16 without chocolate chips. She is putting 6 brownies on each plate. How many plates does she need?
20 + 16= 36
36 divided by 6 = 6 plates
Jewel has 30 teammates on her volleyball team. Her team gets 10 more players.
What equation would represent the problem?
30 + 10 = __
Ashton had two boxes of pencils with fourteen pencils in each box. He gave six pencils to his brother. How many pencils did Ashton have left?
22 Pencils
What number can go in the blank to make the equation true? _____ divided by 9 = 4
36
What equation can be used to solve 27 divided by 3?
___ x 3 = 27
Mrs. Kim read to her grandchildren for 13 minutes on Monday, 15 minutes on Tuesday and 36 minutes on Wednesday. How many fewer minutes did Mrs. Kim read on Monday and Tuesday combined than she did on Wednesday?
8 minutes
Alison gives her friends 30 stickers. She gave the same number of stickers to each of her 10 friends.
What equation would represent this problem?
30 divided by 10 = ___
Aunt May milks her Holstein cows twice a day. This morning she got 365 gallons of milk. This evening she got 380 gallons. She sold 612 gallons to the local ice cream factory. How many gallons of milk does she have left?
133 Gallons of Milk