Which activity is a key area of number sense?

A. calculation of interest

B. calculation of a loan amount

C. application of symmetry

D. use of decimals

In order to solve for the variable in the equation 2 (x + 3) + 5 x = 3 (2 x minus 1), Jaleesa begins by applying the distributive property, then combines like terms.

Taylor is building doghouses to sell. Each doghouse requires full sheets of plywood which taylor cuts into new shapes. The plywood is shipped in bundles of 14. how many doghouses can taylor make from 12 bundles of plywood?

You're making cookies for a party. The recipe calls for 1 bag of chocolate chips, 2 sticks of butter, 2 eggs, 2 cups of flour, 1 teaspoon of salt, 1 teaspoon of baking soda, 1 teaspoon of vanilla, 3/4 cup of sugar, and 3/4 cup of brown sugar.

What's a rule you can use to find the difference of two integers without using counters

Kevin has $25. MP3 downloads cost $0.75 each. How many songs can he download and still have $13 left to spend

Multiply and simplify: 10x (9x^2 + 6x + 7)

B ∩ U A = U (B ∩ A).

Kylee bought a pack of 12 cookies. one-third if the cookies are peanut butter. How many of the cookies in the pack are peanut butter?

How do you know the opposite of a nonzero integer?

The mileages of cars in a fleet of cars are normally distributed with a mean mileage of 52,000 miles and a standard deviation of 2,000 miles. What is the probability of randomly selecting a car with a mileage less than 52,000 miles?