## Unit 4 - Decimals & Their Uses

**Internet Connections**

Quizlet

**-**Use this link to study your Unit 3 vocabulary.

Base Blocks Decimals - Base blocks consist of individual "units," "longs," "flats," and "blocks" (ten of each set for base 10). They can be used to show place value for numbers and to increase understanding of addition and subtraction algorithms.

Pan Balance – Numbers - Use this tool to strengthen understanding and computation of numerical expressions and equality. In other words, practice creating name collection boxes.

Concentration - By yourself or against a friend, match whole numbers, shapes, fractions, or multiplication facts to equivalent representations.

Measurement Mania - Try your hand at converting centimeters to meters.

Recognizing Student Achievement

Student’s are making adequate progress if they can demonstrate the following:

Student’s are making adequate progress if they can demonstrate the following:

- identify values of digits in whole numbers
- identify values of decimal digits
- compare decimals through thousandths
- estimate sums of decimals and explain strategy
- identify data landmarks
- write decimals through hundredths
- measure line segments to nearest centimeter
- demonstrate automaticity with multiplication facts

**>**- greater than

**<**- less than

**centimeter (cm)**- a metric unit of length equivalent to 10 millimeters, 1/10 of a decimeter, and 1/100 of a meter

**decimal**- a mark used to separate the ones and tenths place

**decimeter (dm)**- a metric unit of length equivalent to 1/10 of a meter or 10

**deposit**-the act of putting money into a bank account; deposits increase the account value

**interest**- A charge for using someone else’s money. Interest is usually a percent of the amount borrowed.

**meter**- The basic unit of length from which other metric units of measure are derived. One meter is equal to 10 decimeters, 100 centimeters, or 1,000 millimeters.

**millimeter**(mm) - a metric unit of length equivalent to 1/10 of a centimeter, and 1/1000 of a meter

**unit**- A label used to put a number in context. In a problem about 5 apples, apples is the unit. In measuring length, inches or centimeters are the units.

**withdrawal**- the act of taking out money from a bank account; withdrawals decrease the account value

**whole**- An entire object, collection of objects, or quantity being considered in a problem situation; 100%. Same as ONE.