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14 Cards in this Set
 Front
 Back
Use digits and symbols to write "the sum of 2 and 3 is less than the product of 2 and 3.

2 + 3 < 2 x 3


To find a missing divisor in a division problem, we __________.

divide


53=2
35=2 Reversing the order in subtraction results in the ___________ difference. 
opposite


A letter that stands for an unknown number is called a ______________.

variable


The numbers to the right of zero on the number line are called ___________ numbers.

positive


To find a missing dividend in a division problem, we _____________.

multiply


The numbers to the left of zero on the number line are called ___________ numbers.

negative


Tell how you would find n in this problem:
3+4+n+7+8=40 
Add the known addends and subtract their sum from 40.


To find a missing subtrahend in a subtraction problem, we _______________.

subtract


To find a missing factor in a multiplication problem, we ___________.

divide


We can find a missing addend in an addition problem by ______________.

subtracting


Zero is neither _____________ nor ____________.

positive
negative 

The zero point on a number line is called the __________.

origin


To find a missing minuend in a subtraction problem, we _______.

add
