## Math Unit 1 - Number and Operations in Base Ten - Part 1

Learning Goals

- Understand Place Value
- Compare Whole Numbers
- Add/Subtract Whole Numbers
- Round Whole Numbers
- Model & Solve Add/Sub Word Problems

## Terms & Symbols

= equal to

addend - numbers that are added together. ex. in 4 + 5 the numbers 4 and 5 are addends

algorithm - a step by step procedure to solve a certain type of problem

**>**great than**<**less thanaddend - numbers that are added together. ex. in 4 + 5 the numbers 4 and 5 are addends

algorithm - a step by step procedure to solve a certain type of problem

**bundling, regrouping, trading**- ex. exchanging 10 ones for 1 ten**difference**- answer to a subtraction problem**digit**- ex. 0,1,2,3,4,5,6,7,8,9, a digit's value depend upon what place value it is in**equation**, number sentence - ex. 2,,389 + 80,602 =**estimate**- an approximation of an amount**expanded form**- ex. 100 + 30 + 5 = 135**rounding**- approximating the value of a given number**standard form**- a number written in the format 267**sum**- answer to an addition problem**tape diagram**- a bar model used to represent a word problem

**word form**- ex. two hundred sixty seven