MENTAL CHALLENGE
8*7=
56
Rebeca collects 125 seashells at the beach. She gives 60 of them to her friend Thelma. How many seashells does Rebeca have now?
65 seashells
A square has a side length of 7 cm. What is the perimeter of the square?
It´s perimeter is 28 cm
What are the two parts of a fraction called?
Numerator and Denominator.
Write the following number: forty-four thousand seven hundred and sixty-seven in expanded form
44,767= 40,000 + 4,000 + 700 + 60 + 7
64/8=
8
There are 24 bananas. If you divide them equally among 4 baskets, how many bananas will be in each basket?
6 bananas
A rectangle has a length of 9 cm and a width of 4 cm. What is the area of the rectangle?
It´s area is 36 square centimeters.
Mention the four basic operations and their opposite operations.
Addition, subtraction, multiplication and division. Addition is opposite of subtraction, and multiplication is opposite of division.
In the Cartesian coordinate system, what are the names of the two axes and how are the coordinates written?
The two axes are called the X-axis and the Y-axis. Coordinates are written as (x, y).
470+40-25=
485
Sarah has 72 stickers. She wants to share them equally among her 8 friends. How many stickers will each friend get?
9 stickers
A triangle has a base of 5 cm and a height of 4 cm. What is the area of the triangle?
Answer: 10 square cm (Area = 1/2 * base * height = 1/2 * 5 * 4 = 10).
How many quadrants are there in a Cartesian plane and what are they called?
There are four quadrants, called Quadrant I, Quadrant II, Quadrant III, and Quadrant IV.
How much do 5/8 and 4/6 add up?
5/8 plus 4/6 = 62/48
180/6=
30
A playground with rectangular shape has a length of 14 m and a width of 8 m. What is the perimeter of the rectangle?
It´s perimeter is 54 meters.
A square has a side length of 9 cm. What is the area of the square?
Answer: 81 square cm (Area = side length^2 = 9^2 = 81).
True or False that the formula for calculating the area of a circle is: pi times diameter squared
FALSE
Find the least common multiple of numbers 15 and 35
105
900/3+740=
1,040
Find the least common multiple of the numbers 8 and 40
LCM = 40
A circle has a diamater of 15 cm. What is the perimeter of the circle?
Answer: 153.86 square cm
What is an equivalent fraction?
Is a fraction that represents the same value or proportion as another fraction.
Tom has $2,000. He buys a book for $710 and a toy for $890. How much money does Tom have left?
$400