Counting by ones, we say,"1, 2, 3, 4, 5,..." these numbers continue without end.
What are counting numbers.
100
The answer to a subtraction problem.
What is the difference?
100
A part of a line.
What is a line segment?
100
The distance from the center of the circle to the edge of the circle.
What is the radius?
200
Numbers that are added together.
What are addends?
200
To write numbers, we use "1, 2, 3, 4, 5" and so on. These numerals have a specific name.
What are digits?
200
Subtraction and addition undo each other. Another way of saying this is...?
What is an inverse operation?
200
Continues in opposite directions without end. This is illustrated with arrows on each end.
What is a line?
200
The distance across the circle through the center.
What is the diameter.
300
2+4=6, 4+2=6, 6-2=4, 6-4=2
What is a fact family?
300
To describe the position or order of a group of things, like people in line, we say "first, second, third, fourth, etc.".
What are ordinal numbers?
300
sum - addend = addend
What is the subtraction formula?
300
Numbers that are greater than zero.
What are positive numbers?
300
A triangle whose sides are all the same length.
What is an equilateral triangle?
400
addend + addend = sum
What is the addition formula?
400
Our number system is a base-ten system because it is based on the number 10. Each place in a number represents a power of 10 (1, 10, 100, 1000, 10,000). The value of each place is 10 times the value of the place to its right. SO....the value of each digit is determined by it's place.
What is place value.
400
When you separate one group into two groups.
What is subtraction?
400
Numbers that are less than zero.
What are negative numbers?
400
An angle that is less than 90 degrees.
What is an acute triangle?
500
The answer to an addition problem
What is the sum?
500
To tell how many things are in a group, or to count a number of things, we say, "one, two, three, four, etc."
What are cardinal numbers?
500
In this problem: 56 - y = 32, the "y" represents the number being subtracted, or taken away. If this were turned into an addition problem, it would be called....?