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Chapter 1 Vocabulary
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Terms in this set (11)
add
To join together sets to find the total or sum.
addends
Any numbers being added together.
count back
On a number line, start at the greater number and move back by the other number.
count on
On a number line, start at the greater addend and move forward by the other addend.
difference
The answer to a subtraction problem.
doubles
Two addends that are the same.
fact family
Addition and subtraction sentences that use the same numbers.
missing addend
The missing number in a number sentence that makes the number sentence true.
near doubles
Addition facts in which one addend is exactly 1 more or 1 less than the other addend.
subtract
Take away, take apart, separate, or find the difference between two sets.
sum
The answer to an addition problem.
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