1. Ch. 3 Add and subtract decimals
Chapter 3 vocabulary

2. A familiar number used as a point of reference.
1. Benchmark
A familiar number used as a point of reference.

3. 2. Decimal
Denoting a system of numbers based on place value of tenths, hundredths, thousandths.
Also says “AND”.

4. To find a number that is close to an exact amount
3. Estimate
To find a number that is close to an exact amount

5. One of one hundred equal parts.
4. Hundredth
One of one hundred equal parts.

6. 5. Round
To place a number with one that is simpler and is approximately the same size as the original number.

7. 6. Term 7. Sequence Each of the numbers within a sequence.
An ordered list of numbers.

8. One of one thousand equal parts.
8. Tenth
One of ten equal parts.
9. Thousandth
One of one thousand equal parts.