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Vocabulary
Properties
Mental Math
Estimation
Solve
100
In (5)(3)=15, the number is 15 is called the
What is product.
100
(5)(10) = (10)(5) is an example of which property
What is the commutative property.
100
27 x 0 x 3 =
What is 0.
100
If you use 50 x 70 to estimate the product of 56 x 75, what type of estimation would you be using?
What is front end
100
3n, when n = 8
What is 24?
200
This can help you determine whether an answer is reasonable.
What is estimate.
200
The product of any number and 0 is 0.
What is the zero property.
200
30 x 900 =
What is 2700
200
A front end estimate give a product that is (greater than, less than) the actual answer.
What is less than
200
2 x 6 x j, when j = 5
What is 60?
300
If you have to multiply (329)(26). Multiplying 329 by the digit in the ones place will give you a _____
What is partial product.
300
m x 1 = m
What is the identity property.
300
(38)(25)(4)=
What is 3800
300
The factors you would multiply if you rounded (17)(96).
What is (20)(1000)?
300
Cypress Springs sold 413 tubs of cookie dough. Each tub cost $13. The school made about this much
What is $4,100 or $4,000?
400
In 53 x 12=636, the 53 and 12 are known as
What are factors.
400
Changing the grouping of factors does not change the product defines
What is the associative property
400
The amount a family of 4 would spend on round trip plane tickets from Monroe to Chicago if each ticket costs $300.
What is $1,200.
400
Isiah has 6 coins that are worth 0.32. The coins he has are
What are 2 dimes, 2 nickels, and 2 pennies?
400
If the average fifth grader is 11, that is this number of months
What is 132?
500
You are using this when you use what you know to help you figure out what you don't know
What is logic.
500
5 x 16 = (5 x 10) + (5 x 6) is an example of which property
What is the distributive property.
500
30 x 25 =
What is 750
500
Use this method to get the most accurate estimate of 49 x 28
What is rounding?
500
The amount Mrs. Lewis paid if she ordered 25 new computers for CSE. Each computer costs $859.
What is $21,475