Addition and Subtraction
20 + 8 - 14 = ?
14
A rectangle is 3 inches wide and 4 inches long. What is the perimeter of the rectangle?
14 inches.
3 + 3 + 4 + 4 = 16.
or, (3 x 2) + (4 x 2) = 16.
4 x 6 = ?
24.
A classroom has 4 girls and 7 boys. What is the ratio of girls to boys?
4:7.
Candies cost $0.75. How many candies can be purchased with $5.15?
6.
$0.75 x 6 = $4.50
$0.75 x 7 = $5.25
Jack has 3 red Skittles, 2 green Skittles, 4 orange Skittles, and 3 yellow Skittles. How many Skittles does Jack have?
12.
Doug finds a sand dollar on the beach. Its circumference is 8 pi. What is its radius?
4.
Circumference = 2 pi r
A dog has 5 puppies. Each puppy weighs 7 lbs. What is the total weight of the puppies?
35 lbs.
7 x 5 = 35
Frank paid $36 for 4 copies of his favorite book. How much did each copy cost?
$9.
$36 divided by 4 = $9
Which comparison is NOT true?
A) 1 x 3 > 1 x 1
B) 3 x 5 > 2 x 6
C) 8 x 3 > 4 x 7
C.
A) 3 > 1 is true
B) 15 > 12 is true
C) 24 > 28 is NOT true.
Amy has 17 more books than Bob. Bob has 44 books. How many books does Amy have?
Amy has 61 books.
44 + 17 = 61
A farmer wants to create a square pasture for his horses. He has 400 feet of fencing. How big can the length of his field be?
100 feet.
400 feet / 4 sides = 100.
How many seconds are in 20 minutes?
1200.
60 seconds x 20 minutes = 1200.
There are 60 students in the cafeteria, and 12 tables. If the same number of students sit at each table, how many students will be at each table?
5 students.
60 students divided by 12 tables = 5.
If x = 11 and 23 - x + 17 = y, what is y?
y = 29.
23 - 11 + 17 = 29
Katie has 17 more books than Lisa. Katie has 44 books. How many books does Lisa have?
Lisa has 27 books.
44 - 17 = 27.
Amy and Amanda are sisters and share a bedroom that is 11 feet x 8 feet. They decide to split the room evenly. How much area does each sister get?
44 square feet.
(11 x 8) / 2 = 44.
8 x 8 = ?
64.
A kickball team has 5 girls and 20 boys. What is the simplified ratio of girls to boys?
1:4.
5:20 simplifies to 1:4.
Kim is walking to the store. Halfway there, she stops at a friend's house. Then she walks 6km to the store. How far does she walk in total, to the store and back home?
24km.
6km is halfway, so the distance between Kim's house and the store is 12km. She walks there and back, and 12 x 2 = 24.
Mary has $500, and decides to have a 3-day bake sale. She spends $250 on ingredients. On the first day, she sells $85 worth of cookies. On the second day, she sells $310 worth of cakes. On the third day, she sells $140 worth of brownies. How much money does Mary have at the end of her bake sale?
$785.
$500 - $250 + $85 + $310 + $140 = $785
Larry lives in a city where each plot of land is a square with a perimeter of 40 feet. Larry's decides to buy his next door neighbor's property and combine it with his own. What is the area of Larry's total property?
200 square feet.
If the perimeter of the square is 40, each side must be 10. That means the area of one plot is 100, and the area of two plots is 200.
How many months are in 5 years?
60.
What are the factors of 30?
1, 2, 3, 5, 6, 10, 15, 30.
Given the pattern 1, 6, 12, 18, 24..., what is the 12th number in the pattern?
66.
1 = 6 x 0 = first number
6 = 6 x 1 = second number
...
66 = 6 x 11 = twelfth number