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8 Cards in this Set

  • Front
  • Back
addition
a joining operation (+) on two or more numbers that gives a total, the sum
compare
to determine similarities and differences of objects, to determine whether a number is less than, equal to, or greater than another number. EX. <,=,>
regroup
rearrange the formation of a group used to assist when trading or carrying in addition and subtraction.
3 15
Ex. 45
-27
subtraction
to take one quantity away from another.
Ex. 12-7=
take away
to subtract
estimate
to find an answer that is close to the exact answer, often based on rounding
difference
the answer in subtraction
how many more are needed
a part of the set(whole) is given. The solution is the number needed to complete the set.