Chapter 3 Math Vocabulary

To trade ten in a place for one in the next higher place, or one in a place for ten in the next lower place, to + or -

To find a number close to the number

Mathematical operations that undo each other, such as addition and subtraction

A number from which another number is subtracted

Rounding is a process that determines which multiple of 10 or 100 and so on a number is closest to

A number that is being subtracted from another number

A way of estimating that uses the first digit of each number

The result of subtracting

A subtraction method where the number being subtracted is broken down by place value & each PV is subtracted separately

A number sentence with an equal sign that shows that the value of the left side is the same as the value on the right